Vegetable Oils-Liquid Gold

Vegetable Oils-Liquid Gold

This article is about common and uncommon vegetable oils derived from seeds, nuts and, in some cases, fruit pulp.

Vegetable oils:

Vegetable oils have been called ‘liquid gold. That is because they are a source of nutritionally valuable fatty acids, vital dietary components. But their range of applications goes much further, from everyday food uses to medicinal and cosmetic uses and even industrial processes.

Seeds and nuts are the most important sources of high-quality oils, although some are derived from fruits and vegetables. While all vegetable oils are composed of fatty acids, their individual profiles vary greatly. Their quality does not only depend on their composition but rather on the method of extraction.

 Many oils, including common cooking oils, are solvent extracted and highly refined. The advantage of refined oils is their extended shelf-life. But refining removes most of the unsaturated components and thereby destroys or extracts most of the nutrients.

The best cooking oils are ‘cold pressed’, rather than refined.

Methods of Extraction:

Refined oil

Pressing oil from seeds and refining it for human consumption is an elaborate process. The raw material (usually seeds or nuts) first must be cleaned and shelled. Then it is heated to facilitate the extraction process. Next, they are pressed. Modern mills are complicated industrial machines. The pressure necessary to express the oil produces an enormous amount of heat. The press cake must therefore be cooled throughout the process.

Oils that are not cold-pressed contain all sorts of undesired compounds that make the oil unpalatable. This necessitates refinement to remove the undesirable components.

Solvent Extraction – refining oils

Some raw materials are not that rich in oil, but the types of oils that they contain are rare and precious. Such oils do not easily yield to pressure but must be extracted with hexanes, which are solvents. The term ‘Hexanes’ refers to a mixture of hexane in combination with other isomeric compounds. Hexanes are a by-product of refining crude oil, and they are toxic to human health. When used to extract edible oils, these hexanes must be removed again to render them safe. This is achieved by heating the mixture to about 60 °C.

The extracted oil must then be refined to purify it and remove any unwanted substances and residues. The oil is washed in a watery sodium base liquid (industrial soap), causing certain compounds to separate or clump together so that they can be filtered out. Refinery basically means putting an oil through a chemical mill to make it fit for human consumption. From the industry’s perspective, the chief advantage of refining oils is that it produces a much greater yield, and the shelf-life can be extended to well beyond a year.

Cold Pressed Oils

Cold-pressed oils are of much higher quality since nothing is added or removed from them. They are extracted by simple mechanical pressure. This is done very slowly while simultaneously cooling the press cake. The oil must not get hotter than 40 °C lest its valuable compounds are destroyed. Cold-pressed oils are expensive because the yield is much lower compared to refined oils. Nor is the shelf life as long, but the nutrient profile and flavour of cold-pressed oils is much richer and more complex. High-quality cold-pressed oils have a nuanced bouquet of flavours, just like good coffee or wine. No two oils ever taste the same.

Find organic oils, essential oils and other ingredients at Starwest Botanicals

Almonds
Image by Konevi from Pixabay

Sweet Almond (Prunus dulcis)

A light, gentle oil derived from almond seeds. This oil is nutritionally highly beneficial and may be used for culinary purposes (best to use organic). According to research, it has an impressive ability to reduce cholesterol levels. However, most Almond oil is bought by the pharmaceutical and cosmetics industry and used for salves, ointments, massage oils, crèmes and lotions. Thanks to its gentle nature, it is suitable for use as baby oil. The skin readily absorbs it, and its perfect viscosity never leaves a greasy feeling. It is rich in essential fatty acids. Store in a dark, cool place to maximize the shelf-life.

Fatty Acids:

  • Oleic- 64.8%
  • Palmitic- 6.4%
  • Linoleic- 26.1%
  • Linolenic- 0.3%
  • Stearic- 1.4%
Apricot
Image by 夏 沐沐 from Pixabay

Apricot Kernel (Prunus armeniaca)

Apricot oil is a light oil, even gentler than Almond oil. The kernels may be pressed or solvent extracted. This oil is not for internal use but has excellent properties if used as a cosmetic base oil for making crèmes and lotions or facial oils. Apricot oil is chemically similar to Almond oil and has a similar shelf life but is not quite as drying as Almond oil.

Fatty Acids

  • Oleic- 64.2%
  • Palmitic- 5.0%
  • Linoleic- 28.3%
  • Linolenic- 0.2%
  • Stearic- 1.0%
Argan nut
Image by Symel from Pixabay

Argan oil (Argana spinosa)

This edible oil comes from the nuts of a small desert tree found in Morocco. According to Moroccan tradition, the nuts must pass through the guts of the goats, who forage on these trees, before they can be processed. The nuts are then roasted and crushed. Submerging the pulp in water causes the oil to float on the surface where it can be siphoned off – no doubt, a labour-intensive process. The oil has a nutty smell and flavour and is rich in vitamin E, carotenes and phytosterols. It is a sought-after ingredient for therapeutic skin-care products for aged and damaged skin.

Fatty Acids:

  • Oleic- 48.4%
  • Palmitic- 12.6%
  • Palmitoleic- 0.1%
  • Stearic- 5.4%
  • Gadoleic- 0.3%
  • Arachidic- 0.2%
Avocado
Image by Cesar Gonzalez from Pixabay

Avocado (Persea americana)

This trendy and delicious fruit is so rich in fat that it readily gives it up by simple expeller extraction. The oil is dark green and thick, almost solid when unrefined, turning brown when exposed to sunlight. Avocado oil is highly nutritious and beneficial for the skin. But as it is also very unstable, it goes off quickly. Avocado oil soothes irritated and inflamed skin, as well as burns and scars. It has excellent moisturizing properties and can help regenerate the elasticity of the skin. However, most commercial Avocado oil is refined, which removes many of its nutrients. The fatty acid profile is highly variable.

Fatty Acids

  • Oleic- 36-80%
  • Palmitic- 7-32%
  • Linoleic- 6-18%
  • Palmitoleic 2-13%
  • Stearic 0.5-1.5%
  • Alpha Linolenic 0-5%

Babassu (Orbignya oleifera)

Babassu is an oil palm whose nuts resemble small coconuts. It is native to the coastal regions of Brazil. Babassu is the third most important oil palm species in the world and is widely used for food and medicine. The oil is rich in saturated fats, thus not the best choice for culinary purposes. As a cosmetic agent, it has good moisturizing, emollient and cleansing properties. Babassu is used as an ingredient in suntan lotions, cleansing crèmes and lip balms. Babassu is especially beneficial for dry and brittle hair and can be used in hair care products. Commercially, it is used as an ingredient of soaps and detergents.

Fatty Acids

  • Lauric- 50%
  • Myristic- 20%
  • Oleic-12.5%
  • Palmitic- 11%
  • Capric- 7%
  • Caprylic- 4%
  • Linoleic 1.5%
  • Stearic- 3.5%
  • Caproic 0.2%
Black Cumin
Image by pasja1000 from Pixabay

Black Cumin Seed (Nigella sativa)

Also known as the cottage garden flower ‘Love in the Mist’, Black Cumin seeds yield a bitter, slightly spicy oil rich in unsaturated fatty acids. Its Linoleic acid and bitter components render it useful as a nutritional supplement and metabolic and digestive stimulant. It is also beneficial for conditions that affect the upper respiratory tract, such as asthma, bronchitis and emphysema. A few drops of the oil can be added to salad dressings, but most prefer it as soft gels. Its strong smell means it is not often included in massage oils, but in combination with the appropriate essential oils, it can produce an invigorating detox blend or enhance mixtures for inflammatory skin conditions such as acne and eczema. (It should not be used internally during pregnancy.)

Fatty Acids

  • Oleic- 22.6%
  • Palmitic- 11.7%
  • Linoleic- 55.6%
  • Linolenic- 1.0%
Black Currant
Image by Pezibear from Pixabay

Black Currant Seed (Ribes nigrum)

Black Currant seeds are rich in polyunsaturated fatty acids that boost heart health. They fight chronic inflammation and have anticoagulant properties that help to prevent thrombosis. Many women find that adding oils rich in Alpha and Gamma Linolenic acids help regulate symptoms associated with the menstrual cycle. As a nutritive additive of cosmetic preparations, Black Currant seed has a revitalizing and moisturizing effect on mature skin, smoothing dryness and wrinkles. It provides the nutrients needed to restructure the natural elasticity of the skin.

Fatty Acids

  • Palmitic- 6%
  • Stearic- 5%
  • Oleic- 11-12%
  • Linoleic 47-48%
  • Gamma Linolenic- 16-17%
  • Alpha Linolenic 12-13%
  • Parinaric 3%
  • Gadoleic 1.1%
Borage

Borage (Borago officinalis)

A common herb of the Boraginaceae family, with delicate blue starry flowers, produces a highly nutritious seed with many valuable properties. Borage Seed oil is rich in GLA (gamma Linoleic acid). It is available in soft gels as a nutritional supplement to help regulate the menstrual cycle and ease menopausal symptoms. Borage seed oil can be used as a therapeutic agent to treat chronic inflammatory conditions such as rheumatoid arthritis, skin conditions and menstrual symptoms. As a nutritional ingredient in cosmetic preparations, it has restorative properties that are particularly soothing for sensitive skin and can be incorporated into moisturizing night crèmes.

Fatty Acids

  • Linoleic- 30-40%
  • Gamma Linolenic- 8-25%
  • Oleic- 15-20%
  • Palmitic- 9-12%
  • Stearic- 3-4%
  • Gadoleic- 2-6%
Castor
Image by Couleur from Pixabay

Castor oil (Ricinus communis)

Castor oil plants have been cultivated for medicinal and cosmetic purposes for ages but never for food, as the seeds are toxic, and the oil is powerfully purgative and emetic. The thick and viscous oil has many industrial applications, including softening or waterproofing materials and treating leather, and as an ingredient of cosmetic products such as soaps, ointments, crèmes, salves, lipsticks, hair care products and lotions. Sulphonated or hydrogenated Castor oil is known as Turkey Red oil and can be used as a dispersing agent and can be used in bath oils.

Fatty Acids

  • Oleic- 3.0%
  • Palmitic- 1.0%
  • Linoleic- 4.2%
  • Linolenic- 0.3%
  • Ricinoleic- 89.5%
Coconut
Image by Ogutier from Pixabay

Coconut (Cocos nucifera)

Unrefined Coconut oil is solid at room temperature but melts at body temperature. It consists predominantly of saturated oils, which render it very stable and give it a long shelf-life. Although it is used for cooking, its profile is better suited for cosmetic uses. It can be incorporated into moisturizing body butter, hair care products, lip balm, and a soothing emollient in ointments or lotions. The terms ‘fractionated’ or ‘light coconut oil’ refers to a refined oil that lacks most nutrients of the cold-pressed oil. The main advantage of refined coconut oil is that it stays liquid at room temperature and does not smell of coconut.

Fatty Acids

  • Caprylic- 5-9%
  • Capric- 6-11%
  • Lauric- 42-52%
  • Linoleic- 14%
  • Myristic- 13-20%
  • Oleic- 3-12%
  • Palmitic- 8-14%
  • Stearic- 1-3%

Corn oil (Zea mays)

Corn oil is well known as a cheap and readily available cooking oil. Unfortunately, most corn is now produced from GMO sources. Regular corn oil tends to be highly refined and processed. Unrefined corn oil has a good nutritional profile that is rich in unsaturated fatty acids and vitamin E, but it is hard to find.

Fatty Acids

  • Myristic – 0.1%
  • Palmitic- 8-13%
  • Palmitoleic- 1%
  • Stearic- 1-4%
  • Oleic- 24-32%
  • Linoleic- 55-62%
  • Alpha Linoleic- 2%
  • Arachidic – 1%
Evening Primrose

Evening Primrose (Oenothera biennis)

The seeds of the otherworldly-looking Evening Primrose, which only opens its flowers at night, yield a most precious oil. Although edible, the oil is not used in cooking, but as a nutritional supplement. Evening Primrose Oil is rich in GLA, an essential fatty acid vital for maintaining numerous physiological processes. It boosts the immune system, reduces inflammatory symptoms including those of rheumatoid arthritis and Lupus, regulates menstrual and menopausal symptoms and reduces high blood pressure and cholesterol levels. It also helps with skin conditions such as acne, rosacea or eczema, and the healing of ulcers and nerve damage associated with diabetes. The oil can be used as a nutritional supplement or externally as a special ingredient of skin-care products. It soothes irritated or inflamed skin and can be used as an anti-wrinkle component of night crèmes in facial oils for mature skin.

Fatty Acids

  • Linoleic- 73.3%
  • Gamma-Linolenic- 9.0%
  • Oleic- 8.3%
  • Palmitic- 6.2%
  • Stearic- 1.5%
grapes

Grapeseed (Vitis vinifera)

Until fairly recently, grapes were more valued for their juicy fruit than their seed. But when examined more closely, the seeds yielded a finely textured, light oil with a good nutritional profile, including Linoleic acid, but not in the remarkable range compared to other oils. Its chief merit is its low cost, which makes it popular for inexpensive ‘natural’ cosmetics. Commercially, it is used in soap-making and as machine oil. Good quality Grapeseed oil is edible and can be used for cooking.

Fatty Acids

  • Linoleic- 63.93%
  • Linolenic- 0.77%
  • Oleic- 23.65%
  • Palmitic- 8.09%
  • Stearic- 3.56%
Hazelnut

Hazelnut oil (Corylus avellana)

Hazelnut oil has a fine nutty flavour and is nutritious and delicious. But not all commercially available hazelnut oil is of food-grade quality, and some are highly refined. Hazelnut oil is rich in vitamins A, B and E. Its light, dry or astringent texture lend itself to skincare products, particularly for oily skin types. It also has emollient properties that soften the skin. Commercially, it is used in a wide range of cosmetic products from hand crèmes to lipsticks, cleansing lotions and sun oils.

Fatty Acids

  • Oleic- 77.4%
  • Palmitic- 4.7%
  • Linoleic- 13.9%
  • Stearic- 2.6%
Hemp

Hemp (Cannabis sativa)

Hemp Seed Oil is pressed from the seeds of Cannabis, but the oil does not contain any psychoactive properties. Overall, this oil has one of the best nutritional profiles of any plant oil and is extremely rich in omega-3 fatty acids that are so important to health. Hemp oil is edible and recommended as a nutritional supplement for many conditions, including menstrual problems, high blood pressure and other cardiovascular problems, MS, rheumatoid arthritis and even cancer. It also supports the metabolism, lowers cholesterol and soothes inflammatory skin conditions. Hemp oil has a thick, heavy texture, yet it feels soft and is readily absorbed by the skin. It is best used in combination with other oils in massage blends, lotions or crèmes. 

Fatty Acids

  • Alpha-Linolenic- 18.87%
  • Gamma-Linolenic- 4.01%
  • Oleic- 9.23%
  • Linoleic- 56.03%
  • Palmitic- 5.74%
  • Stearic- 2.48%

Jojoba (Simmondsia chinensis)

Jojoba oil is produced from the seeds of a small desert shrub native to the southwestern United States. The rich, thick substance pressed from the seeds is more of a liquid wax that solidifies at just below normal room temperature. Jojoba oil is not used for cooking but has an excellent profile for cosmetic use. It is very nutritious and rich in vitamin E and certain proteins, including one that resembles collagen. Jojoba oil has excellent restructuring qualities that can repair chapped skin and may even be used on chilblains. It is also excellent for mature, dry and sagging skin to which it can restore some elasticity. The properties of Jojoba oil are similar and even superior to those of sperm whale oil, which it has come to replace in many natural beauty products. Native Americans have used Jojoba’s healing properties in cancer care and cosmetically for hair care preparations.

Fatty Acids

  • Erucic- 16.3%
  • Gadoleic- 69.3%
  • Oleic- 10.1%
  • Palmitic- 0-2%
  • Behenic- 0-1%

Kukui Nut (Aleurites moluccana)

The Kukui tree is native to the Pacific region and is Hawaii’s official ‘state tree’. The light, yellow oil is highly moisturizing, yet non-greasy, making it an ideal ingredient for skincare preparations. Kukui oil can prevent the loss of moisture, keeping the skin smooth, supple and elastic. It is suitable for all skin types but particularly valuable for mature, chapped, and dry skin. As a component of healing ointments, it soothes irritable or inflammatory conditions, such as psoriasis and eczema, or burnt skin.

Fatty Acids

  • Oleic- 20%
  • Palmitic- 6%
  • Stearic- 0.3%
  • Palmitoleic- 0.1%
  • Linoleic- 42%
  • Linolenic- 29%
Flax
Image by Annette Meyer from Pixabay

Flax/ Linseed (Linum usitatissimum)

Flax and Linseed are two names for the same plant, rich in both fibre and oil. The seeds have a remarkable composition of essential fatty acids and are an excellent source of omega-3 alpha-linolenic fatty acid. The human body can convert this fatty acid into EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), the long-chain omega-3 fatty acids found in fish oil, but it is not very good at it. Some people even lack the necessary enzyme for this conversion. Nevertheless, Linseed oil is nutritionally very valuable and can be used in salad dressings or as a dietary supplement. For skincare products, it is less popular as it quickly turns rancid, has a strong smell and thick and sticky texture. Industrially, Linseed Oil is used as paint thinner and wood sealant, and artists use it for their oil paints.

Fatty Acids

  • Lauric acid 0.02%
  • Myristic acid 0.09%
  • Palmitic acid 5.36%
  • Stearic acid 2.26%
  • Arachidic acid 1.06%
  • Behenic acid 0.22%
  • Lignoceric acid 0.58%
  • Palmitoleic acid 0.04%
  • Oleic acid 16.75%
  • Gadoleic acid 12.53%
  • Erucic acid 1.45%
  • Linoleic acid 14.78%
  • Alpha-linolenic acid 42.27%

Macademia (Macademia integrifolia)

The Macadamia tree is known as Bush nut in its native Queensland, Australia. It became popular after it was brought to Hawaii, which is now the world’s leading producer. Macadamia nut oil has an excellent fatty acid profile, comprising a good balance between monounsaturated, omega-6 and omega-3 fatty acids. This makes it very stable and a great choice for culinary use. Macadamia oil contains palmitoleic acid, a compound that is also found in human sebum. As the skin matures, the Palmitoleic acid diminishes. Thus, Macadamia oil provides excellent properties for skincare products for mature skin. It nourishes and tones the skin and helps to restore its elasticity. Macadamia oil is suitable for all areas, including very sensitive parts e.g. around the eyes, and is easily absorbed by the skin.

Fatty Acids

  • Lauric- Traces
  • Myristic- 0.4-1.6%
  • Palmitic- 7-10%
  • Stearic- 1.5-5%
  • Oleic- 54-63%
  • Palmitoleic- 16-23%
  • Linoleic- 1-3%
  • Arachidic- 1.5-3%
  • Gadoleic- 1-3%
Neem

Neem (Azadirachta indica)

In Asia, Neem has the reputation of a miracle tree, and not just for its oil. Its other parts are also medicinally valuable. Neem oil has a very pungent, garlicky smell, which does not lend itself very well to massage or bath oils. But, it has potent anti-microbial properties that can be incorporated in salves and lotions to treat parasites (lice), fungal (Athlete’s foot) and bacterial infections. In Ayurvedic medicine, it is used for all kinds of skin problems.

Fatty Acids

  • Palmitic- 18%
  • Stearic- 15%
  • Oleic- 50%
  • Linoleic- 13%
  • Arachidic- 2%
Olive tree

Olive (Olea europaea)

Olive oil hardly needs an introduction. It is one of the best cooking oils available. But unlike most vegetable oils, it is pressed from the seed but from the fruit pulp. The familiar rich greenish-yellow oil has a well-balanced heart-healthy fatty acid profile that is key to the Mediterranean diet. For most cosmetic products, olive oil is a bit too thick and heavy. Blended with other, lighter oils, it creates excellent slippage in massage blends. It can also be used as a menstruum to extract fatty components from plants such as St. John’s Wort. In Mediterranean countries, olive oil is used in soap-making and nourishing skincare products such as body butter and lotions. It soothes inflammatory skin conditions such as psoriasis, dermatitis, and eczema, and can be applied to burnt, dry or chapped skin.

Fatty Acids

  • Oleic- 60-85%
  • Palmitic- 14.4%
  • Linoleic- 9-14%
  • Linolenic- 1%
  • Stearic- 2.43%
Oil Palm nuts
Image by tk tan from Pixabay

Palm (Elaeis guineensis)

Palm oil production has skyrocketed in recent years, much to the demise of virgin forests in tropical regions. Vast areas are turned over to oil palm plantations, with devastating consequences for the local ecosystems. Much of it is used as biofuel, a greenwashing coup. Energy giants are selling us palm oil as a source of sustainable energy without the need to change our behaviour while destroying ecosystems elsewhere.

Oil palms yield two distinct types of oil, one pressed from the fruit pulp, which is used in processed foods, and the other from the actual kernels. The latter is used predominantly for soap and detergent production. Palm oil is not a very healthy cooking oil as it contains a high percentage of saturated fats. It can be used in cosmetic blends, but the nutritional profile is not great.

Palm Fruit Fatty Acid Profile:

  • Linoleic- 9-11%
  • Linolenic- 0.4%
  • Oleic- 39-41%
  • Palmitic- 43-45%
  • Stearic- 4-5%

Palm Kernel Fatty Acid Profile:

  • Lauric- 40-55%
  • Capric- 3-5%
  • Caprylic- 2-6%
  • Linolenic- 1%
  • Myrisitic- 14-18%
  • Oleic- 12-20%
  • Palmatic- 6-10%
Peach
Image by Free-Photos from Pixabay

Peach (Prunus persica)

Peach is related to almond and apricot, and all three of these oils share similar qualities. Although peach kernel oil is slightly heavier, it is just as gentle. Due to its limited availability, it tends to be a pricey choice. Peach kernel oil may be used for cosmetic preparations such as facial lotions and rejuvenating crèmes for aged and tired skin, lip balms, bath or massage oils. It is rich in monounsaturated fatty acids. This oil is not for internal use.

Fatty Acids

  • Palmitic acid 5-8%
  • Oleic- 55-75%
  • Linoleic- 15-35%
peanuts
Image by hgsarc from Pixabay

Peanut (Arachis hypogaea)

Peanut oil is cheap and widely available – and, unfortunately, often gene manipulated. They are an important cash crop and in terms of world production, peanuts take second place after soy. Peanut oil has a high smoke point, making it suitable for frying. It has a high percentage of monosaturated fatty acids, rendering it stable and giving it a long shelf-life. Peanut oil is rarely used for cosmetics, except as a ‘filler’ to stretch other, more precious oils. Allergies to peanuts are common. They are more likely to occur when exposed to crude, unrefined oil.

Fatty Acids

  • Palmitic- 7.0 – 16.0%
  • Stearic- 1.3 – 6.5%
  • Oleic- 35.0 – 72.0%
  • Linoleic 13.0 – 43.0%
  • Linolenic Max. 0.6%
  • Arachidic 0.5 – 3.0%
  • Gadoleic 0.5 – 2.1%
  • Behenic 1.0 – 5.0%
  • Erucic Max. 0.5%
  • Lignoceric- 0.5 – 3.0%
rosted pumpkin seeds
Image by Hebi B. from Pixabay

Pumpkin Seed (Curcubita pepo var. styriaca /syn. var. oleifera)

Pumpkins originated in the New World. They were completely novel to Europeans when Columbus introduced them. But, the familiar Pumpkinseed oil comes from a cultivated variety, Curcubita pepo var. styriaca (syn. var. oleifera) developed in Styria, Austria. The seeds of this particular variety are exceptionally rich in oil. Before pressing them, they are roasted briefly. The resulting oil is dark green and has a distinct nutty flavour. Pumpkin seed oil is very wholesome; rich in omega-3 and omega-6 fatty acids and vitamin E, A & C. Like pumpkin seeds, the oil is also rich in zinc. Traditionally, it was used as a nutritional supplement for conditions of the urinary tract, such as weak bladder or prostate problems. Pumpkin seed oil is rarely used in cosmetics, although its nutrients would add value. Keep in dark bottles in a cool, dark place. Exposure to heat and light deteriorates its quality.

Fatty Acids

  • Oleic- 15.9 – 24.7%
  • Linoleic- 56%
  • Palmitic- 12.3%
  • Stearic- 0.1 – 4.8%
  • Linolenic 0.1%
Rapeseed

Rapeseed/Canola (Brassica napus)

Rape, a member of the mustard family, is a widely produced commercial crop. The oil pressed from its seeds is sold under the product name ‘Canola oil’ and describes a type of rapeseed, which is low in erucic acid. Canola is a light cooking oil, with a better ratio of saturated and non-saturated fatty acids than other standard cooking oils. However, in Canada, which is the largest producer, most Rape is gene manipulated. In industry, Canola oil is used to manufacture margarine and soap, and as industrial machine oil. It is also one of the most important sources of biodiesel. Occasionally, it is found in cosmetic products.

Fatty Acids

  • Myristic- 0.1%
  • Palmitic- 3.5%
  • Stearic-1.5%
  • Arachidic- 0.6%
  • Behenic- 0.3%
  • Palmitoleic 0.2%
  • Oleic- 61-70%
  • Gadoleic- 1.4%
  • Erucic- 0.2%
  • Alpha Linolenic- 11%
  • Linoleic- 21%
Rose hip seeds
Image by aixklusiv from Pixabay

Rose hip Seed (Rosa rubiginosa)

Rose hip seed oil is a precious oil obtained from a Chilean variety of roses native to the Andes. Their seeds are very high in essential fatty acids (80%). Rose hip oil is not used for cooking but has an excellent profile for cosmetic uses. It is particularly suitable for facial blends and lotions that nourish the tender tissue around the eyes, and tone the skin. The oil has a light, gently astringent and moisturizing quality. It is valuable as an ingredient of ‘after sun care’ lotions, soothes burnt skin, and scars. Not for internal use.

Fatty Acids

  • Oleic- 14.22%
  • Palmitic- 3.71%
  • Linoleic- 45%
  • Linolenic- 33.08%
Safflower
Image by didwnddl from Pixabay

Safflower (Carthamus tinctorius)

Historically, Safflower is a dyers plant, valued for its pigment. But today, it is mostly cultivated for the oil content of its seeds. The yellow-orange, thistle-like flowers are also the source of what is known as ‘false saffron’, a cheap substitute, which does not come close to the real thing. Safflower oil is a nutritious cooking oil with a relatively neutral flavour. There are two varieties of Safflower: one is higher in monounsaturated (oleic acid), the other in polyunsaturated fatty acids (linoleic acid). The monounsaturated variety is more stable and has a longer shelf-life.

Fatty Acids

  • Oleic- 75.33- 80.00%
  • Palmitic- 4-9%
  • Linoleic- 12-16%
  • Linolenic- 1%
Sesame
Image by TheUjulala from Pixabay

Sesame (Sesamum indicum)

Sesame oil originated in Asia and the Middle East, where it has long been used as valuable lamp oil. It was also popular for making salves and skincare products. Sesame oil is rich in calcium, oleic and linoleic acid and has a long shelf-life. It has a distinct nutty flavour and is very good as cooking oil The light texture and good moisturizing properties make it suitable for skincare products, cosmetics, soaps and detergents. Two types are available commercially: light and dark sesame oil. They don’t derive from different plants, but the seeds used for dark Sesame oil are toasted before pressing, making the flavour more intense. Dark Sesame oil is only used for cooking.

Fatty Acids

  • Linoleic- 43.93%
  • Oleic- 39.93%
  • Palmitic- 8.99%
  • Stearic- 3.50%

Soy oil (Soja hispida)

In Asia, soy is a staple crop. Its remarkable rise to stardom started about 50 years ago. Before then, it was virtually unknown in the western world. It has become a common ingredient in almost all processed foods. In terms of market share, Soybean oil ranked as the number one vegetable oil until recently, when Palm oil overtook it. Unfortunately, soy is also the most ubiquitous GM crop. Soybean oil is not only used in the kitchen but also has many industrial applications. It is an ingredient of soaps, detergents and natural cosmetics and is used to manufacture linoleum, plastics and vegetable-based inks. Its chief advantage is that it is cheap, freely available, and has a long shelf-life.

Fatty Acids

  • Myristic- 0.1%
  • Palmitic- 10.8%
  • Stearic- 4.0%
  • Palmitoleic- 0.2%
  • Oleic- 23.8%
  • Gadoleic 0.2%
  • Linoleic 53.3%
  • Linolenic- 7.1%
Sunflower
Image by Ulrike Leone from Pixabay

Sunflower (Helianthus annuus)

Native Americans regard the sunny sunflower as sacred. But that has not stopped its rise to worldwide cultivation. The seeds yield a fine and nutritionally balanced cooking oil that is second only to olive oil. Different varieties of Sunflowers have slightly different profiles. Thus, the regular cooking oil is not necessarily the same as what is sold for cosmetic use. Sunflower oil is relatively light with a medium viscosity. It has an affinity with human sebum, which is why it makes a good, affordable base oil for skincare preparations, massage and bath oils. It can also be used for macerating herbs (e.g. to produce calendula or St. John’s wort oil). The specific fatty acid profile varies considerably depending on the variety.

Fatty Acids

  • Linoleic- 62-70%
  • Oleic- 15-25%
  • Palmitic- 5-8%
  • Stearic- 4-6%
  • Palmitoleic- 0.1-04
  • Linolenic- 0.2- 1.4%
  • Arachidic 0.0-0.3%
  • Gadoleic 0.2-1.0%
  • Behenic 0.5-1.1%
walnuts

Walnut (Juglans regia)

Walnuts are popular as an ingredient of baked goods or trail mixes. But only gourmets are familiar with the delicious, nutty oil pressed from them. Since it is rich in unsaturated fats, it is mostly used in salads or as a flavouring oil in fine baking. It is rarely used in skincare preparations as the unsaturated fats spoil quickly, turning the product rancid. But its soothing, rejuvenating, and emollient properties can make it a rare treat for dry and tired skin.

Fatty Acids

  • Myristic- 0.1%
  • Palmitic- 6-8%
  • Palmitoleic 0.2%
  • Stearic 1.3%
  • Oleic 14-21%
  • Linoleic- 54-65%
  • Linolenic 9-15%
wheat

Wheatgerm (Triticum sativum)

Wheat germ oil is obtained from the germ part of the wheat kernels. It is very nutritious and especially rich in vitamin E, a powerful antioxidant. Wheat germ oil is not commonly used for cooking but may be added to salad dressings to enhance the nutritional profile. However, its flavour is not exactly delicate. Purified vitamin E oil, that does not contain unsaturated fatty acids, is preferred for cosmetic preparations. Vitamin E oil stabilizes blends and prolongs their shelf-life. Its nutritive properties can help prevent stretch marks and scar tissue formation.

Fatty Acids

  • Palmitic- 14-18%
  • Stearic- 0.5-0.6%
  • Oleic- 16-22%
  • Linoleic-54-58%
  • Linolenic 4-7%

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The Cultural History of Grapes

The Cultural History of Grapes

Grapevine (Vitis vinifera)

Grapes are one of the most important agricultural crops in the world. But they have far more uses than ordinarily meet the palate. There are at least 8000 cultivated varieties of grapes, most of which are grown in the Northern Hemisphere.

Name: Grapevine (Vitis vinifera)
Family: Vitaceae
Synonyms: Grapevine, Vigne, Weintrauben, Rebstock

 

Description:

Grapes are one of the most important agricultural crops in the world. From New Zealand to California, Chile, South Africa and of course, their traditional turf around the Mediterranean Basin, grapes are cultivated in Mediterranean climate zones around the world. Grapevines are surprisingly hardy. They can live on next to nothing. They thrive on poor soils, so long as they are well-draining and don’t mind the heat. The only thing they won’t survive is a cold, wet climate.

When left untended, grapevines can reach a height of about 15 m. As climbers, they will scramble up anything that will give them support. In cultivation, they are often trained on wires and cut back after each season so that only the strongest one or two shoots remain.

The gnarly stem forms finely grained, dense wood. The leaves are palmate (hand-shaped) with deeply indented lobes, with very jaggy serrated margins, depending on the variety. In May or June, they begin to flower, forming bunches of tiny, white, 5-petaled flowers with a very delicate and sweet aroma. Alas, this phase does not last long. Soon, bunches of sweet, juicy berries start to develop.

Depending on the variety, their size and colour vary. The smooth-skinned, yellowish-green to reddish, or purple-black berries usually contain 2 seeds each (except for seedless varieties). Vines can be propagated by seed or cutting. Most European stocks are grafted onto American rootstocks due to a devastating blight that nearly destroyed all European vine stocks.

There are also many wild grape species, which also tend to be a meandering bunch. They can sprawl over an extensive area if left undisturbed. Their berries also grow in bunches, but they are much sparser and consist of much smaller berries, which are usually quite tart. Like their cultivated counterparts, the flowers are small and rather inconspicuous.

Chile Wine Valley

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Learn more…

Distribution:

The geographical origins of the vine is still a matter of debate. Various wild varieties can be found in different parts of the world, far beyond the Mediterranean. When the Vikings first arrived in the Americas, they called it ‘Vinland’ for the many wild grape varieties they found there. The type now under cultivation in Europe seems to have originated in Georgia. Under the influence of Greek and Roman expansion, it steadily spread west and north from there. Today grape production is prolific in all warm, temperate regions of the world, from Central and Southern Europe, Northern Africa, Asia Minor, US, Chile, Argentina, South Africa, Australia, to New Zealand.

Problems and Pathogens:

Viticulture is a profitable business, which, however, claims a vast amount of land. Wine lovers may appreciate the variety of tastes and textures this diversity produces, but environmentally it is a disaster. Relying almost entirely on just one single cash crop is highly risky. Furthermore, monocultures heavily depend on fertilizers, and pesticides that are highly damaging to the environment.

Various pathogens can threaten grapevines: powdery mildew rots the stalks, shrivels the leaves, splits the grapes and finally kills the vine. Red spider mites suck the sap from the leaf veins, phylloxera vastatrix strikes the roots, and the cochylis moth grub attacks the flowers.

wine press

HISTORY, MYTHOLOGY AND FOLKLORE

The story of viticulture is so old that nobody really knows where and when it all started. The Bible mentions that Noah planted a vineyard, but even he was probably not the first. Wine is mentioned in almost every classical text, with records dating back some 6000 years.
It appears as though the Greeks were the first to popularize fermented grape juice, with the Romans soon following suit. As major trading powers, they spread the art of viticulture all around the Mediterranean Basin. By 600 BC, wine was a sought-after export commodity, especially popular with the Gauls who, in time, became expert growers themselves.
However, in the latter half of the 18th century, tragedy struck. By then, grapes had moved to the Americas along with the colonists. The drama unfolded when a North American grower sent some specimen of his rootstocks back to the old world for further study. Unfortunately, the sample he sent was infested with a devastating blight (phylloxera vastatrix) that threatened to wipe out vineyards across Southern Europe. It was a catastrophe of unprecedented proportions.
Luckily, the cure also came from North America – and just in time. A frantic search for a blight-resistant yielded results, and another sample was sent to Europe. Growers started quickly grafted their ancient varieties onto American rootstocks, which saved them. Although the industry took some time to recover, European wine-growers rank again at the top of the international charts.

The wines of Ancient Greece seemed to have been quite a different kind of brew than what we are used to today. Historical records describe a much thicker and heavier beverage that had to be diluted at a ratio of 1:3 for consumption. Typically, it was infused with other substances such as resins, aromatic herbs and even psychotropic plants. It is not surprising then that the Greeks associated wine with Dionysus, the wild, shamanic god of ecstasy. His rites were frenzied and orgiastic. A menacing mob of Maenads, (his priestesses) pursued the god (or his representative) in a feverish hunt and tore him apart. Eventually, an animal (a fawn or fox) replaced the human sacrifice. In time, Dionysus was tamed and re-cast as a chubby, cheerful, but domesticated deity of wheat and wine. The animal sacrifice was replaced with a ritual sharing of ceremonial bread and unadulterated wine during the annual celebration of the Elysian Mystery play.

The Romans equated Dionysus with Bacchus, their god of wine and intoxication, whom they worshipped in much the same manner. In Egyptian mythology, Osiris is the Lord of wine, and Isis fell pregnant with Horus after eating his grapes.

The Hellenized Syrian satirist Lucian recounts a ‘tall satirical tale’ in his ‘True History’. A strange vineyard once grew on the far banks of a river that ran with wine instead of water. The grapevines grew woody stems, but their upper parts sprouted beautiful maidens whose hair was a tangle of leaves and bunches of grapes growing from their fingertips. Their enchanting song lured passers-by. But woe to those who succumbed to their embrace: instantly drunk and unable to escape, the hapless took root and soon sprouted shoots and leaves themselves.

Aphrodisiac associations:

Wine is a divine gift of the gods. In moderate amounts, it lifts the spirit, exhilarates and inspires. It opens the mind and holds the key to the heart and soul. Innumerable works of art have been inspired, and countless adventures started by a spark of its passionate fire. But in excessive quantities, it stupefies and causes delusion. It is a fine line between ecstasy and frenzied oblivion.

 

Ever tried making homemade wines?

MEDICINAL USES

Both red and white wine was traditionally used as a solvent to extract other substances when making medicinal wines and cordials. But various parts of the plant itself were also used as medicine.

PARTS USED:

Leaves: fresh young leaves
Flowers: dried or fresh flowers
Berries: fresh or dried fruit
Seeds: oil pressed from the seeds

HARVEST TIMES:

The flowers appear in May/June. The leaves should be picked in spring when they are tender, and the grapes ripen from September onwards (in the Northern Hemisphere).

LEAVES

Constituents:
In the summer, the leaves contain a mixture of sugar and glucose, tartaric acid, potassium bi-tartrate, quercetin, quercitrin, tannin, Amidon, malic acid, gum, inosite, a crystallizable fermentable sugar and oxalate of calcium. In the autumn, they contain more
quercetin and less quercitrin.
Actions:
Anti-inflammatory, astringent, styptic
Indications:
An infusion of 1 TSP of fresh, finely cut leaves per cup of water helps with conditions such as rheumatism, gout, nausea and spitting of blood. A preparation known as ‘Papinorum Extract’ made from the leaves is used in Homeopathy to treat epilepsy and inflammatory conditions of the hip. Dried and powdered, leaves were fed to cattle as a treatment for dysentery. A decoction was used to prevent a threatened miscarriage. The astringent properties help to arrest internal and external bleeding, cholera, dropsy, diarrhoea and nausea. The decoction can also be used to treat mouth ulcers and as a douche for vaginal discharge. Grape leaves are used as a treatment for varicose veins and fragile capillaries. For this purpose, leaves are harvested as soon as they turn red and are used either fresh or dried.

FLOWERS

Actions:
Nerve tonic
Indications:
1tsp of dried flowers per cup of boiling water is said to strengthen neuronal dendrons. It also supports the bone marrow to build red blood cells. The infusion can be used internally or applied externally as a rub to aid neuronal function (even for numbness of the lower limbs)

BERRIES

Constituents:
Malic, tartaric, ascetic ascorbic and racemic acids, alanine, alpha-linolenic acid, alpha-tocopherol, arginine. Oxalic acid in unripe fruits, Ca, P, Fe, thiamine, riboflavin, niacin, and ascorbic acid
Actions:
Fortifying blood tonic, nourishing, stimulates kidney and liver function and thus aids elimination and inner cleansing, gentle laxative
Indications:
A grape-fast is a popular method to rid the body of accumulated metabolic waste products and other toxins. 2 kg of grapes should be eaten throughout the day for two weeks, with little or no other food. It is recommended to do a full day fast one day before embarking on this regime. This is an excellent way to stimulate and tone the kidneys and thus to lose weight by releasing water from the tissues. It reduces fat, regulates bowel function, purifies the blood and cleanses the skin. A grape-fast can alleviate rheumatic pain and heartburn, regulate metabolic processes, water retention, oedema and circulatory complaints. Grapes are restorative and nourishing food that aid recovery from anaemia and debilitating conditions. Dehydrated grapes (raisins) have demulcent, nutritious and slightly laxative properties. Grape sugar (fructose) is rapidly absorbed into the bloodstream. It almost instantly restores energy levels in case of exhaustion and debility.
 Contraindications:
A grape fast is not recommended for dyspeptic, excitable, hot-blooded individuals, as it may cause palpitations.

SAP:

Grapevine sap, a watery substance that naturally occurs when pruning the vines, was used as a lotion to treat weak eyes and corneal floaters. It has also been used as a skin lotion. Internally, it acts as a diuretic.

 

wine press

 

GENERAL USES

  • Basketry: The annual shoots are pruned in the winter. They are very flexible and have been used for basketry and broom-making.
  • Cosmetics: A lotion made from the flowers has been used for freckles, while the oil (seeds) is used for making soap.
  • Dyes: The berries yield a purplish colour, which is not durable. The fresh or dried leaves dye yellow.
  • Fuel: The old grapevine stocks are popular as firewood, especially for grilling due to the aromatic smoke. The twigs make good kindling.
  • Grapeseed Oil: Grapeseed oil is pressed from the seeds. It is used for culinary and cosmetic purposes. For culinary use, the oil must be refined to make it fit for consumption. Unrefined grapeseed oil is slightly sticky. As a massage oil, it is best to blend it with other oils.
  • Culinary uses: Grapes are wonderfully refreshing, nourishing and cleansing fruits that can be enjoyed straight from the vine. Their sweet and tasty juice makes a refreshing beverage and can also be used to make jelly. Evaporated to produce a concentrate, it makes a good sweetener. But above all, grape juice is fermented to make wine and champagne. Wines come in a staggering variety: reds, rose or white wines, champagne or sparkling wine, are made from hundreds of different grape varieties. A dessert wine is produced by adding alcohol to the ferment to prematurely stop the fermentation process.
  • The young tendrils can be eaten raw or cooked as a vegetable. The flowers are also edible and can be prepared as fritters.
  • The sap tastes sweet and can be used as a drink, but harvesting large quantities weakens the vines. Roasted seeds can be used as a coffee substitute.
  • Pickled leaves are used as a wrapping for finger-food appetizers (dolmas) that are especially popular in Greek and Middle Eastern cuisines.
  • A crystalline salt, cream of tartar, also known as potassium bitartrate, is derived from the residue of pressed grapes. Sediments collected from wine barrels are used for making baking powder.

 

Photographs by Kat Morgenstern

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Happy Valentine’s Day

Happy Valentine’s Day

It’s Valentine’s day! Time to spread some loving!

One of the nicest things about February is not just the fact that March is around the corner and therefore spring is on its way, but that the inner tide is turning, too. Just as the sap is rising in trees, the love juices are also flowing within. It is a time to indulge in courtship and romance, to lavish buckets of romantic gooeyness on your significant other, rekindle an old flame, or perhaps to make an impression on someone that only recently caught your eye.

Who is St. Valentine?

February 14th is Valentine’s Day, a somewhat questionable Saints Day, which has its origin in the Roman festival of Lupercalia, a festival of licentiousness. At first, denounced as a lewd pagan rite, it proved too popular to be suppressed. Thus, the old festival of love was dressed in a thin cloak of Christian piety and became the saint’s day of St. Valentine.

This Valentine was a fictitious figure who was said to have been executed just as his beloved received his ‘billet of love’ (a kind of little love letter, which has its modern-day equivalent in the custom of sending Valentine’s cards). This custom was also associated with the Roman festival of Lupercalia.

February – the month of Juno Februata

Incidentally, the word ‘February’ is derived from the name of the Goddess ‘Juno Februata’, to whom this month is dedicated. Her name contains the word ‘febris’ – meaning ‘fever’, which does not refer to a kind of divine flu, but to her fiery passion – the fever of love.

To this day, Valentine’s Day is celebrated as ‘lover’s day’. Here is a look at some of those age-old customs and their underlying significance and some suggestions as to how to stoke the fire of love.

say it with flowers

Say it with flowers

Flowers are still THE most popular Valentine’s gift, but which ones should you choose? Maybe draw some inspiration from the Victorian flower language, a secret lovers’ code that could be used to express very specific kinds of messages, so long as both parties were ‘in’ on the symbolism. If they were not, the message would either be lost or interpreted entirely the wrong way. Seen in this light, even Roses are not a safe bet. It all depends on the specific variety and color you choose. Thus, instead of conveying a message of love, it could mean something like ‘you are a pretty ditz’, or ‘you might be charming, but proud’, and ‘your beauty will not last’. To learn more, see this long list of flowers and their specific meanings, before risking a disastrous mistake!

Chocolate – always desirable

chocolate loveIt might be safer to ‘say it with chocolates’ instead. Chocolate is the other most popular Valentine’s gift. Although perhaps a little less romantic, it might be more enticing and less ambiguous. After all, Cocoa’s reputation as an aphrodisiac dates back to the ancient Aztecs.

Montezuma, the last Aztec emperor, was a veritable cocoa fiend! He regularly downed his golden goblet full of foaming ‘xocoatl’ (=chocolate) brew, to invigorate himself before entering his harem.

Few of us today would find his recipe very tempting as it has little resemblance with our modern idea of what chocolate should taste like. But, it seems to have worked for him.

Incidentally, modern research confirms the ancient claim. Apparently, Cocoa contains a substance that has appropriately been called ‘Anandamide’ – alluding to the Sanskrit word ‘ananda’, which means ‘bliss’. Anandamide has anti-depressant properties that induce a sense of well-being and contentment. Cocoa is also rich in Phenylethylamine, which neurochemistry links to the feeling of euphoria so characteristic of the mental state of ‘being in love’. No wonder everybody LOVES chocolate!

A loving spoonful?

Peter's Chili‘Love goes through the stomach’, so they say. Those who find chocolates and flowers too ordinary might instead seek to impress their loved one with a particularly sexy dish, prepared with love, of course.

On scouring the literature one cannot help but be in awe at the amount of foodstuff deemed to have aphrodisiacs properties. Some of these appear to have gained that reputation on account of their appearance (who says placebos don’t work?), while others have a rather more direct, physiological effect.

In the category of visual aids are things like carrots, parsnips, asparagus, and bananas.

Things like piñon nuts, lady’s fingers, truffle mushrooms, oysters, and pufferfish, on the other hand, would hardly qualify if optics was the only criteria. Various spices, as well as certain herbs, have also long held on to their aphrodisiac reputation. Their volatile oil components are highly stimulating. Among these herbs are lovage, cardamom, saffron, and cinnamon. Garlic and chilies are in a category of their own. While not exactly seductive, they undoubtedly pack a punch. None fits both categories better than the gloriously endowed ‘Peter Chili’ – I mean, really, Mother Nature – was that meant to be a subtle hint?

Drinks

ChampaignContrary to popular belief, alcohol is not a suitable aphrodisiac. In fact, it is probably the worst thing you could drink if love is on your mind. While a little alcohol undoubtedly reduces inhibitions, too much of it has a desensitizing effect and is most likely to put you to sleep.

A non-alcoholic cocktail is a great, nutritious alternative that provides an energy boost and is very tasty, too.

Or, try a chai tea. This exquisite, richly flavored blend combines a whole range of warming aphrodisiac spices such as ginger, cinnamon, cloves, cardamom pods, and black pepper with black tea, milk, and honey.

The Bittersweet Story of Sugar

The Bittersweet Story of Sugar

The story of sugar is bittersweet indeed. It is a story of addiction that is responsible for millions of deaths, unspeakable suffering, despicable abuse, savage cruelty, ruthless exploitation, social injustice, ecological destruction, and last, but by no means least – a legacy of public health problems including dental decay, diabetes, obesity, and cancer, which combined cost millions of dollars in annual health budgets around the world.

The story of sugar can starts somewhere around 15000BC. Sugar cane is a tall reed and a member of the grass family. It originating in New Guinea, but it must have been pretty popular, even in prehistoric times as by 6000BC it had spread to India, China, and the Fiji Islands. The Arabs introduced it to the Occident and planted it in what is now Iraq and Persia. At that time, the Arabs were spreading throughout southern Europe, taking their most important food plants with them and traded in sugar, back then an expensive rarity that was mostly sold as medicine.

Sugar’s reputation as a medicinal substance actually has a long tradition. In Ayurvedic medicine, various forms of sugar were used for eons and still play a role as adjuncts to countless compound remedies. As early as 600BC it was mentioned in numerous ancient texts, where it is referred to as ‘Sharkara’. It was classified into twelve different types according to the quality. A thin type of reed known as Vamshika was considered ‘superior’ quality.

sugar

It appears that the art of making sugar was invented in India, in about 100BC. Originally the cane was simply boiled to obtain a concentrated, unrefined type of sugar known as jaggery or ‘gur’. Ancient Greek historians described it as ‘a kind of honey from a reed, produced without bees’.

A turning point came in 1097AD when some crusaders robbed a caravan in Palestine and made off with 11 camel loads of sugar. Very soon after, in 1100AD Venice became the most important trading port for sugar – and as a result, it prospered mightily!

But the competition was stiff, even back then. By around 1400AD, the Portuguese had taken over to become the biggest force in the sugar trade. In 1420AD they started to settle the island of Madeira, which they had only discovered the year before. Soon they had stripped the island of its natural vegetation in order to plant sugar cane. Of course, laborers were needed to do all the hard work.

That problem was solved by Henry the Explorer, who in 1444, on one of his voyages to circumnavigate Africa, had kidnapped a group of 235 natives from Lagos, which he had brought back to Seville. The Portuguese bought them as slaves to work in the new Portuguese sugar plantations. Columbus himself is said to have been involved in these early plantations. Soon after, the Canary Islands suffered the same fate. And, as we all know, it was from here that in 1493AD Columbus began his second voyage to Hispaniola, carrying in the vault of his ship some sugar cane cuttings- the beginnings of a very dark chapter of history that was to change the world forever. The story of sugar shows that European expansion did not happen haphazardly. It happened by design and should be regarded as a crime.

sugar harvest

At first, sugar cane was only planted on a fairly small scale, in Hispaniola. the biggest problem of the Conquistadores was that the native population was utterly unwilling and ‘unsuitable’ as a workforce. Work on the sugar plantation is very hard. Clearing land, planting, and harvesting by hand in the heat of the tropical sun was back-breaking enough, but processing the canes in the presses and boilers to make sugar is what became known as the proverbial sweatshop, and a dangerous one at that.

The natives simply refused, preferring to die rather than to perform the work, or if they were forced into this horrendous slavery, they soon died in droves from the inhumane working conditions. Within 20 years of Columbus’ arrival in Hispaniola (now Haiti) the native population shrank from an estimated 800 000 – 2 million inhabitants to only 15000, and 30 years later they were completely annihilated.

To solve the labor problem, plantation owners imported slaves from Africa. Africans were brutally rounding up like animals, tied together, and marched for miles to the shipping port. How is it possible that human beings can be so cruel and heartless towards another fellow human being? The answer is denial by means of ‘dehumanization’. Europeans were high on sugar: they were greedy, power-hungry, and willing to sacrifice their humanity for profits. They simply denied Blacks the status of a human being.

They regarded them as subhuman and considered their lives to be inconsequential, except as a workforce. The brutal excesses of slavery are well documented and there is no need to spell them out in every bloody detail again. Suffice to say that over the course of 400 years about 20 million Africans were forced into slavery and transported across the Atlantic (several million more were sold into slavery elsewhere). Millions died from the unspeakably harsh conditions (20% of those that were captured never even survived the journey). In the 18th century, the value of one ton of sugar was considered equivalent to one slave. In 1801 alone, 35000 slaves died for the 70 000 tons of sugar that England imported that year.

sugar press

Sugar plantations dramatically changed the demographic face of the world. Over the course of 400 years, the native population of the Caribbean Islands was practically obliterated, Africans from a multitude of ethnic backgrounds were imported. Irish, Welsh, and Scottish immigrants followed and after the abolition of slavery, Chinese and Indians were lured in as a cheap workforce.

In 1747, a German researcher by the name of Maggrave discovered that sugar beets yielded a substance that was identical to cane sugar. Europe began its own sugar production, but it was only when Napoleon issued a trade embargo against products from the transatlantic colonies that Europe’s domestic sugar production really took off.

sugar plantation

Apart from the devastating human impact, sugar plantations also had dire ecological effects. Sugar demands good soil as well as plenty of water, and it is extremely hungry for expansion. Millions of acres of native forests were decimated to make room for this monoculture cash crop. Water supplies became polluted from the industrial waste and water tables sank. As in all monocultures, pesticides and fungicides need to be applied in vast quantities, thus further polluting the soil and the water as well as poisoning the workers.

Social injustice is programmed into each and every cash crop economy and the vestiges of unfair land distribution determine the political, socioeconomic, and demographic patterns in all parts of the world where colonial powers with their cash crop economies once ruled.

And yet, in comparison, sugar cane is easily the most destructive cash crop the world has ever exploited. Apart from the human and environmental production costs mentioned above refined sugar offers no nutritional benefit what-so-ever. It provides nothing but empty calories while causing major damage to our physical health. Yet, we classify it as a food. Health problems related to excessive levels of sugar in the diet, such as obesity and diabetes, are costing health services literally billions of dollars each year. Yet, sugar’s grip on society’s sweet tooth continues unabated – in fact, global sugar production and consumption are still steadily increasing. This sweet drug has driven the world economy for hundreds of years, and as we have seen, with disastrous consequences. It is not the sugar plant that is at fault, but our addictive minds.  Addiction and denial go hand in hand. As long as we refuse to acknowledge that there is a problem we can simply go on ‘as normal’, fulfilling the cravings while ignoring the consequences. Whether the object of desire is sugar, coffee, tea, cocoa, tobacco – or oil, the patterns that drive consumption and ruthless exploitation are the same.

Pumpkins (Curcubita sp)

Pumpkins (Curcubita sp)

Gourds, Pumpkins, and Winter Squash

Since it is nearly Halloween I thought I’d write a post about Pumpkins – predictable I know, but nonetheless fascinating. Pumpkin, a member of the gourd family, belongs to a huge group of cultivars that are all variations of the winter squash. They come in a truly amazing range of shapes, colors, and sizes. Talking about size – some growers have developed the strange ambition: who can grow the BIGGEST Pumpkin of them all? The jury is still out, but growers have already managed to produce some pumpkins of absurd, even obscene sizes. So far, the largest Giant Pumpkin (Cucurbita maxima) ever reported is said to have weighed more than a ton! Other common cultivars are Cucurbita pepo (e.g. Acorn and Halloween type squash) and Cucurbita moschata (e.g. Butternut squash).

The gourd family is native to the Americas. Wild members were used as long as 10 000 years ago, and the family was one of the first to be domesticated. Various types of squash and gourds have been cultivated in Central America since about 7500 – 5000 BC!

They have never lost their appeal. On the contrary. New forms have been developed and Pumpkins, Squash, and Co. have now spread around the globe.

pumpkin varieties

Distribution:

Archeobotanist have found the earliest evidence of Pumpkin use in the Oaxaca region of  Mexico, but its native range comprises both, the northeastern corner of Mexico and the southwestern United States.

What’s in a name?

In the US and the UK the term ‘Pumpkin’, which seems to have derived from a Native American word for ‘a big round fruit’, only refers to the familiar round orange winter squash best known as Halloween decorations. But in New Zealand, the word is used for all types of winter squash.

The German word ‘Kürbis’ derives from the scientific name of the family of ‘Cucurbita’.

Food use

Botanically, Pumpkins are classified as ‘berries’, but no-one except botanists would think of them that way. Edible Pumpkins are mostly grown for the orange fruit flesh, which is incredibly versatile and can be used in countless sweet and savory dishes, most famous among them, Pumpkin pie! But the seeds are also edible and yield an edible and deliciously nutty oil that is rich in vitamin E and linoleic acid. It is not suitable for cooking, as its delicate constituents are destroyed at high temperatures, but it is excellent for adding an extra flavor dimension to soups and salads.

Even the flowers are edible. Stuffed and fried they are a delicacy.

pumpkin pie

Nutrition

It may come as a surprise that pumpkin is quite low in carbohydrates – the caloric value is 66% less than that of potatoes. Nutritionally, pumpkin scores high in beta carotene, the precursor of vitamin A that is so important for the immune system. It also contains pectin, a type of fibre that not only promotes a sense of satiety but also regulates the flow of sugars in the GI tract after a meal. It is thus a very beneficial food for people with metabolic issues. However, it is difficult to predict exactly how much pectin will be present in any particular pumpkin. The content level varies depending on the time of harvest as well as the method of preparation.

Pumpkin also contains vitamin C, B2, and B6. But, amazingly, it has a water content of 92%!

Medicinal use

Pumpkin is a therapeutic food that can boost the immune system and soothes kidney and bladder conditions. The seeds are rich in zinc which boosts the immune system. They are also indicated as a supportive nutritional remedy in the treatment of enlarged prostate glands. The Aztecs used the seeds as a remedy to expel worms, a use that has been adopted by western herbalists.

Pumpkin customs: Halloween decorations

Halloween decorations at the London Dungeon

 

Traditionally, the Halloween pumpkin was a Turnip. I kid you not! It was once a relatively local folk custom in Ireland to carve a Turnip at Halloween. The effigy was known as Jack-o-lantern, which has its origin in an Irish folk tale about a stingy guy called Jack (Stingy Jack, actually)

The Tale of Stingy Jack

Once upon a time, a long, long time ago, Stingy Jack had some drinks with the devil but did not have the money to pay for them. There must be some pretty stupid devils in Ireland – Jack manages to persuade this devil to change himself into a coin so he could pay for the drinks. But as soon as the devil obliged him Stingy Jack decided to keep the coin instead! He put it into his pocket next to a silver cross, thus preventing the devil to change back into his original form.

Eventually, he made a deal with the coin. He freed him on the condition that he would leave him alone and not bother him for a year and a day, not claim his soul, should he die in the meantime. After a year and a day had passed the devil returned and stupidly allowed himself to be tricked again. This time Jack had sent him up a tree to pick a fruit and while he was up there, had carved a cross into the bark. Thus the devil was stuck again. Jack demanded that he would leave him alone again for a further 10 years.

But Jack did not live that long. Soon after the second episode with the devil he died. But despite his posturing with the cross and all, God was not pleased with his conduct and refused entry to heaven on account of his dishonesty. This was a bit of an unforeseen dilemma for Jack, since the devil, still upset with him for tricking him and being mean, also refused him entry to hell. Besides, he had given him his word that he would not claim his soul for 10 years.

Thus, the devil sent Jack off with only a piece of coal to keep him warm and to light his way through the twilight zone. To carry the coal Jack carved out a Turnip to safeguard his chunk of coal, and to this day he roams the land as the lost soul known as Jack O’Lantern.

When the Irish arrived in the United States they brought their story of Jack O’Lantern and their custom of carving the Turnip with them. When they came across the Pumpkin they were delighted as Pumpkins are much easier to carve than Turnips! And, as they say, the rest is history.

Remembering the dead, honoring the spirits

This is the most common story regarding the use of pumpkins at Halloween. But in fact, the real story is much older. In Celtic Ireland, the custom of the carved out Turnip root far predates this Christianized tale. Originally, it is related to the Celtic Festival of Samhain (November 1st), which marks the end of the growing season. At this time, the veil between the worlds is said to be thin and spirits of the deceased leave the Other World to roam among us and to beg for food. It was customary to put out a little food and drink for these spirits and a carved-out Turnip with a candle placed inside was hung up so they could find their way. In turn, the spirits blessed the souls of those who provided for them. The day that marked the occasion later became known as ‘All- Hallows Eve’, which in time morphed into ‘Halloween’.

Interestingly, a similar custom is practiced in Mexico, where November 1st is celebrated as ‘El Dia de los Muertos’ – the day of the dead, which combines Catholic elements (All Saints and All Souls day) with pre-Columbian Aztec traditions. It is a day to remember the dead and families gather in cemeteries to make offerings to their departed relatives. Food offerings, including candied Pumpkins, are an important part of the celebrations, as are the sugar skulls and candles are placed on their graves.

As endearing as these ancient traditions of remembering the dead are, the accompanying waste of food is truly shocking. As the Guardian reports, a staggering 12.76 million pumpkins will be purchased, carved up, and then binned over Halloween.

That’s scary!

Preserving the Harvest (1)

Preserving the Harvest (1)

This article is about ways to preserve the harvest. Making your own pickles and preserves, jams and chutneys, liqueurs and canned veggies is a great way to celebrate the abundant gifts of nature. If you can get the kids involved, it is also a wonderful opportunity to bond and share stories while teaching them essential life skills.

Not too long ago, gardening and making one’s own food was considered old-fashioned and tedious work. It was something that belonged to the domain of Grandmothers and country bumpkins. Why bother, if all you need to do is to go down to the supermarket?

But things have changed. Soaring food prices, GM technology and a growing concern over dubious agrochemicals that have crept into our food supplies, more people have turned to gardening and making your own is fashionable again.

While the garden may not cover all your food needs, even producing some of your own food is uniquely satisfying. However, there is one problem: living in a temperate climate, with a limited growing phase, we are subject to the ‘feast or famine’ phenomenon. The harvest is plentiful during the warm part of the year, but there is almost nothing to harvest during the winter.

With any luck, the harvest is plentiful enough to provide for the cold season as well – but how can we preserve the abundance, so when winter comes we can still enjoy the fruits of the previous season’s labor. What delight it will be then to have tasty reminders of the summer’s plenty.

Freezing

These days, freezing is usually considered the easiest and quickest method to preserve anything. It certainly is convenient – if you have a very large freezer, that is. However, it is not a very energy efficient method, and nor is it particularly reliable. Power cuts occur with worrying frequency. And they spell disaster for anything that is stored in the freezer, unless you have an independent back-up power supply.

Luckily, there are many other options as we can learn from history. How did people manage to store things in the days before electricity lit up our world? After all, it is a fairly new invention!

It turns out, our ancestors have been incredibly innovative when it comes to devising methods of preserving foods, although not all are equally suitable for all types of foods and vegetables.

To begin with, it is helpful to consider the growing cycle. The natural life cycle of a plant starts with germination. Gradually, the plant develops and grows and eventually reaches its peak. This process is known as maturation. Most plants are harvested at their peak. From that point on they begin to decay.

No process of preservation can halt this natural cycle of growth and decay, it can only slow it down, or in some ways, progress it. The ultimate aim is to preserve as much of the mineral and vitamin content of a given fruit or vegetable as possible.

Clamps

In the old days, root vegetables such as potatoes, carrots and parsnips were stored in the cellar. They were kept in boxes filled with earth, which were periodically sprinkled with water to keep them moist. In fact, the original purpose of cellars was to provide a cool, dark storage space for foods. Originally, they would have only had a dirt floor. This creates a moist, cool atmosphere that is able to ‘breath’. Unfortunately, modern houses, with their concrete foundations, insulated basements and concrete floors are much less suitable for storing vegetables. That is why people came up with the idea of these special boxes, which imitate the natural conditions.

But even without any kind of basement it is still possible to store vegetables – in a ‘clamp’. A clamp consists of a mound of root vegetables that is laid out on a thick layer of straw, which in turn is covered with earth. Alternatively, one can dig a pit. The base is laid out with wooden planks and straw. The vegetables are stored in the next layer, which is covered and covered with sand and earth. (For instructions, check with a good book on self-sufficiency).

It is important to ensure ventilation – e.g. by allowing the bottom layer of straw to peek through beneath the covering layers of soil. Unfortunately, these methods only work in places where winter temperatures don’t fall too low.

Carrots can be stored in containers filled with sand (or in clamps, as described above). They should not be washed and must not be damaged, otherwise they will rot. The green parts should be removed.

Sunchokes, parsnips, leeks, celery and Brussels sprouts can remain in the ground. Mild frosts don’t bother them. If need be, a layer of soil, straw or mulch will protect them against damage from hard frosts. Cauliflowers can be ‘planted’ (with roots attached) in boxes filled with sandy soil. They should be sprinkled with water once in a while.

Root vegetable clamps

For a limited period of time, cucumbers, melons and pumpkins can be stored in suspended nets.  But their high water content makes them liable to rot, especially if they have been bruised.

Onions and garlic should be spread out in the sun until the outer layers dry and turn papery. Thereafter, they can be bundled and hung.

Apples can be stored in a cool, moist, but aerated basement. But, they must be handled gently. Bruised apples will rot. Late varieties are more suitable for long-term storage. Early varieties are better used for immediately. Ideally, apples should be picked as late in the season as possible, when they come off the tree without effort. They should be spread out to dry for a day or so, and then stored singly (wrapped in paper, if possible) and placed on a shelf or in small cardboard storage boxes. Pears can be stored the same way, but prefer slightly cooler temperatures.

Chestnuts keep well in clamps. Check for tiny holes in their shells, which is a tell-tale sign that  they are infested with worms. Pulses and grains can be stored in hessian bags. The bags can be treated with neem spray to deter bugs. Shake the bag occasionally to inhibit the development of insect larvae.

Dehydration

One of the best methods to preserve fruits and vegetables is to dehydrate them. This method has the advantage that the ‘natural goodness’ is largely preserved, since only the water is extracted. In hot and dry climates, vegetables and fruits can be dried in the sun, or on special racks. In the colder time of the year, the rack is placed near the fire place or oven. It is difficult to sun dry fruit and veggies in modern apartments. However, one can use the oven to help the process. Arrange the prepared fruit on racks (rather than cookie sheets) that are lined with baking paper. Obviously, thin slices dry faster than thicker ones and juicy fruits take longer than dryer types. The greatest difficulty is to get the temperature right, since many of the nutrients are destroyed at temperature above 40°C. The lowest setting on the dial is usually 50°C degrees (100F). It is better to dry things at a lower temperature for a longer period of time. Keep the oven door slightly ajar to modify the temperature and to let the steam escape.

But even so, keeping the oven running for long periods of time is not very energy efficient and is also a nuisance during the summer, when it is difficult enough to keep the room temperatures bearable.

The best option is a dehydrator. The lower the wattage, the lower the electricity use will be. The best models are expandable (all you to add extra racks), have a timer and an accurate temperature regulator.

To prevent discolouration dip fruits that are vulnerable to oxidation in lemon water (50:50) before drying them. This preserves the natural color. Once dry, and aired out, store the dried goods in air-tight containers (storage jars). Dried fruit and vegetables can keep for ages, as long as they are stored properly. But if they absorb moisture from the atmosphere they will go moldy.

Very juicy fruit should drain for a period of time to reduce the amount of moisture (e.g, pineapple) before drying. Cut the fruit to the desired size and drain in a colander for at least an 1 hour.

Air-drying fruit also has advantages and disadvantages. The main advantage is that it saves on electricity and can be done at a lower temperature, which preserves the vitamins. The disadvantage is that the drying fruit will attract fruit flies. Prolonged drying also encourages mold.

Drying fruit and vegetables correctly requires a bit of practice. Dehydrators make the process a great deal easier and less messy. A major advantage is that the dried material takes up much less space which is handy for storage. Also, dried fruit and veg keep well for long periods of time if stored correctly.

Fruit Leather

Spread pureed fruit blended with honey and ground almonds, or hazelnuts on baking paper, and dry.  Fruit Leather is a very popular snack that also makes an excellent, instant energy, hiking food.

Dried vegetables can be rehydrated by soaking them for a few hours in enough water to cover them; slowly cook them with the remaining water. It took time to remove the water, and it takes time to reabsorb it. If prepared too quickly the veggies will be chewy. The smaller and thinner the slices, the quicker they will reabsorb the water.

dehydration

Lacto-fermentation

Everybody knows (and some actually love) Sauerkraut. But not all Sauerkrauts are created equal. Most commercially available types are produced using salt and vinegar and are pasteurised, which unfortunately, kills off the probiotic substances that make fermented foods like Sauerkraut so beneficial.

Sauerkraut is not the only way in which Cabbage can be fermented. A more interesting variation (to my taste, at least) is Korean Kimchi, which consists of a combination of different vegetables and spices. There are dozens of recipes and plenty of scope for experimentation.

The method of lacto-fermentation is simple, providing one has the right equipment. It does not take much, except a special fermentation crock-pot with a grooved rim. This rim should be half-filled with water, which, once covered with the lid, creates an airlock that prevents air borne bacteria or fungal spores from entering the pot. Another necessary item is a stone or weight to push down the vegetables and keep them submerged in the juices. For smaller amounts, airtight jars (pickling jars) can be used instead.

Cabbage, carrots, cauliflower, onion, garlic, horseradish, celery, bell peppers and pepperonis are well-suited for lacto-fermentation.

Suitable pickling spices include mustard seeds, peppercorns, allspice, juniper, cloves, fenugreek, ajowan, coriander, cumin, chillies, dill, fennel, tarragon, and bay leaves.

Finely cut or shred the vegetables and pack them tightly into the crockpot; sprinkle the spices between the layers of veggies. As the final layer, cover the veggies with a large cabbage or horseradish. Horseradish leaves will help to prevent mold. Prepare enough brine (1oz salt per liter of water) to pour over and cover the vegetables, but don’t fill the jar all the way to the top. (You can add a little whey to aid the fermentation process).

If you use fermentation crock-pot, half fill the rim with water (air-lock), place the stone on top of the vegetables and cover with the lid. Keep an eye on the water level in the airlock and replenish with water if it starts to evaporate. Place the jar or crockpot in a warm place for about 10 days, then move it to a cool one for another 6 weeks. Remove any mold that may have formed on the surface. Avoid removing the lid unnecessarily.

Canning

Canning is a great way to preserve foods. Almost anything can be canned and stored for later – and canned goods keep indefinitely, theoretically, at least. In practice, it is recommended to use canned foods within a year or two.

There are basically two different canning methods, one that is suitable for high acid foods, such as fruit, juices, and pickles, and one that is suitable for low acid foods, such as most vegetables, or meats.

There are many good canning recipes and it is best to choose a tried and tested one to avoid disappointment – especially if you are new to canning.

High acid foods are a little easier to process, as they do not require extreme heat to preserve them. Ordinary boiling is sufficient as the acid content inhibits the growth of harmful bacteria. Certain kinds of equipment make the process a great deal easier.

To preserve high acid foods, you need a large pot and rack (for holding the jars in place above the bottom of the pan), canning jars with two-part lids (lid with a rubber rim and band), a canning funnel, a jar lifter and lid magnet. A ‘head space’ measuring tool and bubble remover can also be useful.

The most important thing about canning is to make sure that all the equipment is squeaky clean and that the produce is immaculate and fresh. Don’t be tempted to preserve items that are on the verge of going off, or you will ruin the whole batch.

Prepare the foods according to your recipe, fill into the jars, and cover with a rubber ring and lid. The lids  are held in place with a special little clamp. Canning machines have a rack that is placed at the bottom. If you are using a large pot, you need to find a rack that fits the pot. Place the jars on top of the rack and cover with water . Boil for a set amount of time (according to your recipe) to sterilize the jars.

For a detailed description of the process see:

Canning High Acid Foods

Low acid foods require more care. Since they lack naturally occurring acids, they must be heated to a temperature that is well above boiling to kill any pathogens that otherwise might spoil the fruits of your labor. To achieve such high temperatures you will need a pressure cooker, preferably a purpose made one with a pressure gauge and thermometer.

As with the high acid foods, it is recommended to use a tried and tested recipe. Fill your food into clean jars, cover with lids and place the jars on the rack. Cover with water and sterilize according to the instructions of your recipe.

For a very useful and detailed description of the process, see this presentation:

Canning Low Acid Foods

Pickling

Instead of fermenting foods, many vegetables can be pickled in vinegar. This method is not as wholesome as the lacto-fermentation mentioned above, since it does not create probiotic bacteria in the process. Acid inhibits the growth of harmful bacteria, which is why it serves well as a preserving liquid.

The most important thing about pickling in vinegar is to use non-metal (except stainless steel) and non-plastic containers. Acids can react with such materials. Use glass or stoneware.

Fruit can be pickled in a vinegar /sugar syrup, to make delicious condiments.

Vegetables are often salted for a period of time (overnight) in order to draw out some of their water and to soften the skin. Wash and simmer them for a few minutes before covering them in vinegar and pickling spices. But not for too long. You’ll want the veggies to stay crunchy.

Some recipes call for a vinegar /sugar others for a vinegar /brine blend. Some recommend the vinegar to first be heated (and simmered with various spices) and then cooled before pouring it over the vegetables, other recipes call for hot vinegar. Pickling provides endless scope for experimentation.

Preserving in Oil

Oil in itself does not ward off bacteria, but it creates an effective barrier and thus prevents oxidation. To preserve vegetables in oil they are usually cooked in either brine or vinegar first, for a short period of time. The idea is to preserve the crunchiness. Place the veggies into a jar and cover with oil. Start with a layer of oil before adding the veggies, as this will prevent air bubbles. Make sure the contents remain covered in oil even once you start to use the preserve. Use good cooking oil – olive oil is ideal, as it has a good balance of fatty acids and resists oxidation.

Preserving in Sugar/Syrup

That sugar isn’t healthy is not the latest discovery of science. It depletes vitamin B1 and calcium and destroys the teeth. However, for certain things sugar is an ideal preserving agent – just as with any other harmful substance, there is a direct correlation between the level of damage and the amount consumed. Sugar preserves include jams, jellies, marmalade, syrup and candied fruit. For jams and jellies it is usually necessary to add pectin (or use preserving sugar) in order to achieve the proper consistency.

If you use lemon or orange peel in your recipes make sure it comes from organic citrus fruit.

Preserving nature’s bounty is an art and no novice will immediately master all methods. But it is a great joy to preserve the harvest and to create unique tasty treats, just exactly the way you like them. No commercial enterprise can even come close to that. All it takes is a spirit of experimentation and discovery.

It is also a lot of work – but it is SO worthwhile when, in the midst of winter, you can still feast on jars and cans filled with the sunshine and goodness of the previous harvest.

Resources:

National Center for Home Food Preservation

FAO Leaflet Small-scale Post-Harvest Handling Practices

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