Birch (Betula sp.)

Birch (Betula sp.)

by | Jan 31, 2026 | Plants & People, Plant Profiles, Trees

Description:

The graceful birch tree has always held a special place in our hearts and minds. Traditionally she was perceived as a youthful Goddess of love and light. Yet, her soft feminine and almost fragile appearance belie her hardy nature. Birch is a tree of northern latitudes and unforgiving climates – common from Siberia to Scandinavia, Scotland, and England as well as North America, the Himalayas, China, Japan, and North Korea. Some species have traveled south, to the more temperate regions of the Mediterranean and beyond – almost all the way to the equator. But in the southernmost regions of her range, she prefers mountainous terrain. Humble and undemanding in her soil requirements, she will even make herself at home in sandy or stony ground. Yet, her special affinity lies with water and her preferred habitat is boggy terrain. Birch is a pioneer tree, who happily settles where other trees fear to set root. Over time she ‘cultivates’ such terrain, making it more arable and preparing it for other species to follow in her steps.

Her silver-white bark gives her a striking appearance. In youth, the papery bark peels off easily. It is thin, yet tough, and in the past, has in fact served as paper. As the tree matures the bark begins to form a layer of cork that provides excellent insulation and protects her against the cold. The young twigs and branches are reddish brown and very elastic. Early in the year, she is one of the first trees to put on her spring-gown of luminous and delicate lime-green leaves, triangular or heart-shaped in appearance and conspicuously serrated margins. Early in the spring, when the leaves first unfold, they feel sticky and are covered by a resinous aromatic substance with a balsamic scent.

Birch catkinsThe flowers are known as catkins. Both male and female flowers are present on the same tree, though they develop separately. The male flowers begin to develop in the summer, endure the winter and wait until the female flowers appear in spring. They court the wind as pollinator and distributor of their tiny winged seeds, which are so light that they may be carried for several hundred miles.

Birch trees can reach a height of up to 30m. They reach maturity after about 50 years but can live to about one hundred years.

HISTORY, LORE AND MAGICAL USES

The people of northern Europe have long been very fond of this beautiful, slender tree with its white, shining stem and graciously flowing branches. To them, it evoked the image of a beautiful young woman, which they identified with Freya or Frigga, their Goddess of love and fertility. The Celts, who were equally fond of Birches, identified her with the virgin Goddess Bridha or Brigid. Etymologically the name, ‘Birch’, derives from the Sanskrit ‘bhura’, meaning ‘shining tree’ – no doubt an allusion to the striking white bark and bright, golden autumn cloak.

In Siberia, Birch was regarded as the sacred world-tree and presented a bridge between this world and the realm of spirits and Gods. At first this may seem an odd choice, given the modest statue and strength of an average Birch tree. But it may be at least partly explained by the fact that in those remote regions Birch frequently was the commonest, if not the only tree around. Another reason may have been its universal usefulness: Birch provides medicine and nourishment and its bark and wood can be fashioned into a large number of utensils, from birch bark containers to coverings for lodges and even garments and shoes.

 

The sap is rich in nutrients and the inner bark can be ground into a flour to make ‘cakes’. This is considered famine food, the last resort when nothing else is available. But deer, and most importantly, reindeer relish this inner bark, which is their life-saving winter forage. In turn, the nomads depend on the reindeer, the sacred center of their world which provided them with almost all the essential gifts that made life possible in these inhospitable regions. The reindeer was a spirit guide and totem animal – and it also showed the people where to find their most important sacrament, the Fly Agaric. This conspicuous toadstool with its bright red cap and white dots atop forms a symbiotic relationship with Birch and are often found growing near them. Reindeer love this toadstool as much as the Siberian shamans do, who consider them as a sacred food of the Gods. They partook of it on special occasions, while honoring the Gods in ecstatic celebrations, or prior to going on a spiritual journey to ask for help and advice from the Gods. Thus, the Fly Agaric and the Birch tree have become closely associated and both are shrouded in mystery.

Some legends portrait Birch as a manifestation of the Goddess, who offers her milk to the shaman as an elixir of life, and some scholars regard the sacred mushroom as the breast of the Goddess from whence her milk flowed – and perhaps even the source of the fabled Soma, the sacred elixir of life and nectar of the Gods.

Fly Agaric

As one of the first trees to put on her spring-dress it is only natural that the Birch has always been associated with the life-giving power and has featured prominently in fertility rites and magic. Birch signals the arrival of spring and traditionally farmers observed her progress to determine when to sow their wheat.

In pre-Christian times, Birch played an important role in Beltain celebrations, which are traditionally held on the eve of May 1st. Throughout Europe, faint echoes of this pagan festival have survived to this day as rural May-Day festivals and pageantries. May-Day is the celebration of spring, of love, life, and fertility. On this day, the whole community, or sometimes just the young lads and lasses, go out into the woods to fetch the ‘May-tree’, which more often than not, is a Birch sapling. Much fanfare accompanies the procession upon their return to the village. The tree is decorated with colorful ribbons, shortbreads, and other goodies and is fixed to the top of a pole which is erected on the village square. In the old days, the raucous feast went on all day and often through the night, with much eating, drinking, singing, dancing and general merrymaking – much to the dismay of the church authorities. They tried hard to suppress these quaint old pagan celebrations but in vain. The dance around the Maypole is still popular in many rural areas, though modern celebrations are tame compared to those of the past and nowadays have been sanctioned by the church.

The fertility and life-giving powers of the May-tree Birch served as a ‘village charm’. A procession of singing and dancing folks carried it from house to house to bestow blessings and protection to all the village folk, their and their animals. Later, the custom evolved into a form of flogging, often referred to as ‘quickening’, which was based on the belief that the mere touch of the Birch twigs would bestow luck and fertility to those who came in contact with them. Thus the men of the village would take it upon themselves to ‘bless’ the women with these fertilizing powers by hitting them with birch twigs. All female inhabitants, women, girls, cattle and farm animals, all received the same treatment. Eventually, though, the custom changed and only children, mentally retarded people, and delinquents were given the Birch twig treatment, which was supposed to drive out the ‘evil spirits’ that evidently possessed them. Of these, the practice of chastising children possessed with the ‘demons of disobedience’ with Birch switches, has persisted the longest.

Birch regarded as a protective tree, able to ward off all kinds of daemons and witches. In a milder form of exorcism than that described above, Birch twigs were often pinned above entrances in house and barn to protect against and avert the evil-doings of witches and demons and to undo their spells and curses – especially those that caused impotence or made the flow of milk dry up.

In magical folk medicine, Birch was associated with ‘transfer magic’, and used to alleviate the pain of rheumatism. Three days before the new moon the sufferer had to go and plead with the Birch tree to relieve him from his pains. Certain prayers were solemnly recited and a wreath was wound by tying knots into the bendy birch twigs. It was believed that in this manner the painful knots of arthritis and rheumatism were transferred to the Birch tree, while the patient would find his limbs nimble and bendy, like Birch twigs.

GENERAL USES

Birchwood is light and rots easily, which makes it rather useless for construction work. However, the bark is extremely water resistant, a quality, which Native Americans have long put to use for waterproofing the roofs of their huts. They also fashioned special lightweight canoes as well as various domestic items, such as pots for collecting sap, or cribs to carry babies, shoes, lampshades and even toys from this versatile bark. In Europe, the twigs have mainly been used for thatching and wattle work or for making brooms. The brush ends of brooms, including those of witches’ brooms, were also partly made with Birch twigs.

In early spring the sugary sap rises in the stem. To tap it much the same technique is used as for tapping Maple syrup: a hole is drilled into the stem (1/2 cm wide and 3 cm deep), and a glass tube is inserted. One should not take more than 2-3 liters at a time and only ‘milk’ the tree once every two years. The hole must be sealed with special tree wax to protect it from bleeding to death. Ordinary candle wax is not sufficient, as it will just get pushed out again. This is best left to an experienced person as otherwise, the tree may suffer great damage or it may even kill it.

Birch trees also yield a resinous substance called ‘Birch tar’, which can be extracted from the bark. It is very rich in tannins and is used for curing leather. It makes an effective (and smelly) insect repellent and can also be used as a balsamic healing agent for all manner of skin sores including insect bites.

The inner bark is rich in sugars, oil and even contains Vitamin C. It provides welcome winter forage for deer and other rodents when everything else is covered under a blanket of snow. Native Americans used to prepare a type of flour from the inner bark, which could be used for baking. Birch is not often utilized as firewood, as it burns too quickly, but the bark makes excellent kindling and will even burn when wet. The smoke is a powerful disinfectant and when burnt as incense it ‘smoke off’ infectious micro-organisms. Native Americans often burnt thin pieces of birch bark in their ‘medicine tepees’, where the sick were isolated, in order to purify the air and kill off germs.

MEDICINAL USES

PARTS USED: Leaves, inner bark, sap

HARVEST TIMES: Spring

CONSTITUENTS:

Leaves: flavonoids, saponins, volatile oil, tannin, resin

Bark: betulin (birch camphor), glycoside, volatile oil, tannin, bitter substances, resin

Sap: Sugar, organic acids, amino acids

ACTIONS: diuretic, bitter, slightly astringent

Birch leaves are very useful for their diuretic properties and can be used to help in the treatment of rheumatism, arthritis and gouty conditions. They also have a reputation for dissolving stones. In Russia, an old folk remedy for rheumatism was to completely cover the patient with Birch leaves, which resulted in a cleansing sweat and subsequent relief. The diuretic action also helps to relieve oedematous conditions and urine retention.

CULPEPER SAYS…

‘It is a tree of Venus. The juice of the leaves, while they are young, or the distilled water of them, or the water that comes from the tree being bored with an auger, and distilled afterward; any of these being drunk for some days together is available to the stone in the kidneys and bladder and is good also to wash sore mouths.’

A decoction of the bark can be used as a wash for impurities of the skin. Birch tar is often used as an ingredient of ointments for psoriasis and eczema.

The sap is a wholesome elixir that can be taken as a spring tonic. However, it has a tendency to ferment easily and is thus not suitable for long-term storage. It should be kept in a dark bottle and stored in the fridge. Adding some Cloves and a piece of Cinnamon also helps to prevent fermentation.

A compound tincture of Birch leaves can be used as a tonic hair rinse to promote healthy growth of hair.

  • 2 handfuls of Birch leaves
  • 1 spoonful of Arnica flowers
  • 1 spoonful of Nettle roots
  • 2 spoonfuls of Nettle leaves
  • 4 Cloves

Cover with 70% alcohol, steep for 3 weeks, strain and bottle. Massage into the scalp and hair as a conditioner.

Or, make a strong infusion with the leaves and add 1 part apple cider vinegar.

Native Americans prepared a mushy paste by boiling and pounding the bark so it could be spread on inflammatory skin conditions, ulcers cuts and wounds. This reduces swellings and prevents infection. They also extracted oil by boiling the wood and bark. It is very effective in fighting fungal and parasitic skin conditions.

The North American species are different from the European White Birch. Their bark tends to be darker and has a distinct wintergreen flavor. In spring,

New Englanders enjoy a type of ‘root beer’ made from the twigs and sap, which apparently is very powerful. Euell Gibbons gives the following instructions:

“Measure 4 quarts of finely cut twigs of sweet birch into a bottom of a 5-gallon crock. In a large kettle, stir 1 gallon of honey into 4 gallons of birch sap and boil this mixture for 10 minutes, then pour over the chopped twigs. When cool, strain to remove the now expended twigs and return the liquid to the crock. Spread 1 cake of soft yeast on a slice of toasted rye bread and float this on top of the beer. Cover with a cloth and let it ferment until the cloudiness just starts to settle. This will usually take about a week, but it depends somewhat on the temperature. Bottle the beer and cap tightly. Store in a dark place, and serve it ice cold before meals after the weather gets hot.” He also says, “Don’t’ have more than a couple of glasses of this beer as it has a ‘kick like a mule'”.

 

 

Cacao can do more – New Uses for an Old Crop

Cacao can do more – New Uses for an Old Crop

by | Mar 3, 2022 | Trees

In the past, there has been a lot of organic waste from the Cacao harvest. Research has been focused on alternative uses for all the discarded pods and fruit pulp produced during the Cacao bean harvest.

CACAO BUTTER :

A white /yellowish oil, expressed from the crushed seeds

CONSTITUENTS:

Palmitic, Stearic-, Oleic-, Linoleic Acid, traces of Isoleic acid

ACTIONS:

Emollient and nutrient

Non-chocolate uses of Theobroma Cacao

 

Economically, the most important use of Cacao is for making chocolate and cocoa for all our favourite sweet stuff. Cacao fat, pressed from roasted Cacao beans, is a by-product that has its own uses. 

Cacao Butter for Cosmetic and Pharmaceutical uses

The cosmetic industry uses Cacao butter as a nutritionally rich, moisturizing, and emollient fat in numerous skin-care products.

Cacao butter is solid at room temperature but melts at body temperature. Suppositories, meant to dissolve inside the body, are often made with Cacao butter. Lotions for haemorrhoids, vaginal and uterine lesions, or dry, chapped skin, lip balm and wound dressings also frequently contain Cacao butter. 

Internally, Cacao butter can help soothe bronchial and intestinal irritations. In fact, even high quality, high percentage Cocoa and Chocolate has some amazing superfood properties.

 

 New uses from waste products

During processing, the beans and some fruit pulp are left to ‘sweat’ for a few days, which changes the beans’ chemistry, reducing their bitterness and creating the right conditions for their characteristic chocolate flavour to develop. Although the pulp is an essential part of this process, only small amounts are. About 60% of the pulp goes to waste. 

 

Cacao smoothies and juices

But it doesn’t have to. In Brazil, farmers remove much of the pulp to modify the acidity and obtain smoother-tasting beans. The fruit pulp is sold at the local market and turned into various delicious products. Cocoa fruit-pulp jelly is a local delicacy. It serves as an ingredient in juices or shakes. But it could also be frozen and used to flavour ice cream, yoghurt or sold as a fruit juice concentrate. Unfortunately, so far, preserving large amounts of pulp has proved difficult and costly. 

 

 

To find ways to make more of the harvest, besides the beans, would be highly desirable, since Cacao prices on the global market are fickle, putting the small subsistence farmers at risk. 

 

New uses for discarded pods

Traditionally, a certain proportion of discarded pods is fed to animals, but the pods are not very digestible. In West Africa, the discarded pods are burnt to yield potassium-rich ash, used for making soap. But composting them, or making bio-char which in turn could be used to return valuable nutrients to the soil, would reduce farmers’ dependence on chemical fertilizers and reduce their costs. (1)

 

In recent years, research has focused on other alternative products that could be obtained from Cacao without decreasing pod yields.  (Antonio Figueira, Jules Janick, and James N. BeMiller, 1993)

 Gum

One such product is gum, present in both the stem and, to a larger extent, in the pods. This gum has a similar composition as Karaya Gum, which is typically extracted from various Sterculia species. 

 

The food- and pharmaceutical industries use it as an emulsifying agent and fixative. Studies show that Cacao pod gum compares favourably with Gum Karaya. Both contain the same monosaccharides, but Cacao pod gum also contains arabinose and has a higher proportion of rhamnose, making it better suited as a binder for pharmaceutical pills. In this respect, it is even superior to Gum Tragacanth. (Figueira et al. 1992).

 

Due to supply inconsistencies, the demand for Karaya gum has diminished. But Cacao pod gum could provide a superior and readily available alternative that could also provide a secondary source of income for subsistence farmers.

 

References

(1) Using Cocoa Pod Husks to Improve Crop Yields and Soil Quality

 

Figueira, A., J. Janick, and J.N. BeMiller. 1993. New products from Theobroma cacao: Seed pulp and pod gum. p. 475-478. In: J. Janick and J.E. Simon (eds.), New crops. Wiley, New York.

Figueira, A., J. Janick, M. Yadav, and J.N. BeMiller. 1992. Cacao gum: a potential new economic product. In: Proc. Int. Cocoa Conf. Challenges in the 90s (in press).

Unten, S., H. Ushijima, H. Shimizu, H. Tsuchie, T. Kitamura, N. Moritome, and H. Sakagami. 1991. Effect of cacao husk extract on human immunodeficiency virus infection. Letters Appl. Microbiol. 14:251-254.

12 amazing superfood properties of Cacao

12 amazing superfood properties of Cacao

by | Feb 24, 2022 | Plants as Medicine, Plant Profiles, Trees

Medicinal and Therapeutic Properties of Cacao

This article is about some surprising medicinal benefits of real Cacao – the stuff that chocolate is made of.

It may come as a surprise, but Cacao is actually pretty healthy.  (It’s my favourite ‘superfood’. 🙂

 

If you are interested in the history of Cacao and how we have come to love chocolate so much, take a look at this article about the cultural history of chocolate.

 

CACAO BEANS

PARTS USED: Dried seeds and seed shells.
HARVEST: Cacao pods take about 5-6 months to mature. The harvest occurs twice a year, from September to February and May/June, even though there is always ripe and unripe fruit on the same tree.
CONSTITUENTS: Fat, Amino Acids, Alkaloids (Theobromine, Caffeine), Riboflavin, Niacin, Thiamine, Calcium, Iron, Potassium, Magnesium, Vitamins A, C, D and E, polyphenols.
ACTIONS: Diuretic, stimulant, aphrodisiac, anti-depressant, nutritive anti-inflammatory, antioxidant

Crushed Cocoa Beans

Crushed Cacao Beans

Image by janiceweirgermia from Pixabay

Diuretic

In Central America, a tea made from crushed Cacao seed shells called ‘nibs’ is used as an effective diuretic. A strong flow of urine is a sign of health and vigour, and any substance that produces this effect is praised as an aphrodisiac, enhancing male potency.

Anti HIV-properties

A pigment extracted from the husks has anti-HIV properties. In vitro studies have demonstrated that polymerized flavonoids present in the husks reduce the damaging effects of HIV. Apparently, they prevent the virus from entering the cells (Unten et al. 1991). But once inside the cell, the virus replicates normally.

Anti-inflammatory

Cacao is incredibly rich in polyphenols, antioxidant flavonoids that have a powerful anti-inflammatory effect.

Animal studies also suggest that Theobromine and Theophylline can ease inflammatory conditions of the respiratory tract, such as asthma, by dilating the lungs and thus helping to relax the air passages.

But unfortunately, most of them are lost due to the standard methods used to process Cacao Beans.

Cardio-Vascular support

Apparently, eating chocolate can be good for your heart health! In 2015, a study found that habitual chocolate consumption can reduce the risk of cardiovascular health issues, providing it is of high quality with a high cacao content. (2)

Cacao can relax and widen the arteries, thus reducing blood pressure and improving blood circulation. Combined with its ability to reduce ‘bad’ cholesterol, it can help prevent heart attacks and strokes.

Skincare from within

The Cacao phenols are also good for the skin. They improve blood circulation to the peripheral cells and improve the smoothness of the skin by helping to hydrate it from within. Long-term use is also said to protect the skin from the harmful effects of the sun.

Mood enhancing

The higher the Cacao content, the better it is for your well-being. Have you ever wondered why you are craving chocolate when doing demanding mental work? It’s your body telling you what it needs: High Cocoa chocolate (min. 65%) has nutritional and stimulating properties that make it a good ‘pick-me-up’.

The flavonols in Cacao improve mood, alleviate symptoms of depression and reduce stress. One study of pregnant women even showed this stress-reducing effect to be conferred to the babies. It is also popular as comfort food to soothe PMS symptoms. Another study showed that older men can benefit from the regular consumption of high Cacao content chocolate, reporting improved health and well-being.

Cognition

Even better, high Cacao content chocolate improves cognitive functions by increasing the blood flow to the brain. The beneficial flavanols can also cross the blood-brain barrier and directly benefit the neurons. For those suffering from cognitive impairments or neuronal conditions such as Alzheimer’s, or Parkinson’s, high Cacao content chocolate is brain food.

The findings are promising, suggesting that more research is warranted.

Blood-sugar regulation

High Cacao chocolate can even have a positive effect on Type 2 Diabetes symptoms. The unexpected findings showed that flavanols can slow the carbohydrate metabolism and uptake in the gut, while stimulating insulin secretion, lowering inflammation and aiding the transfer of sugar from the blood to the muscles.

 

Weight loss

Interestingly, high cocoa content chocolate actually has a positive effect on the body mass index (BMI). Chocolate eaters (min 81% cocoa) lose weight faster than people who do not eat chocolate.

 

Anti-Cancer

Several animal studies indicate that a flavanol-rich Cacao diet lowers the risk of cancer – especially breast, pancreatic, liver and colon cancer and leukaemia. However, more research is needed.

 

Immune system stimulation

Another counterintuitive finding is that Cacao contains antibacterial, anti-enzymatic and immune-stimulating compounds that can have a beneficial effect on oral health.

 

NOTE

It must be stressed, that all of these benefits only apply to high cocoa content chocolate that is very low in sugar, or without sugar. The common candy bar has NO health benefits. On the contrary, chocolate candy can be harmful.

 

(In case you are confused about flavonoids, flavanols and flavanols, they are actually different compounds. Take a look at this article to help clear up the confusion.)

References:

(1) Unten, S., H. Ushijima, H. Shimizu, H. Tsuchie, T. Kitamura, N. Moritome, and H. Sakagami. 1991. Effect of cacao husk extract on human immunodeficiency virus infection. Letters Appl. Microbiol. 14:251-254.

(2) (Kwok CS, Boekholdt SM, Lentjes MA, Loke YK, Luben RN, Yeong JK, Wareham NJ, Myint PK, Khaw KT. Habitual chocolate consumption and risk of cardiovascular disease among healthy men and women. Heart. 2015 Aug;101(16):1279-87. doi: 10.1136/heartjnl-2014-307050. Epub 2015 Jun 15. Erratum in: Heart. 2018 Mar;104(6):532. PMID: 26076934; PMCID: PMC6284792.)

 

 

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History of the Cocoa Tree- Theobroma cacao

History of the Cocoa Tree- Theobroma cacao

by | Feb 11, 2022 | Trees, Plant Profiles

Plant Profile: Cocoa (Theobroma cacao)

Surely, everybody loves chocolate. Yet, little is known about its origin or its fascinating history. This article is a short introduction to one of my favourite plants: Cocoa – Theobroma cacao, the food of the gods.

Description

If you saw a Cacao tree, you’d never think that this is the stuff that chocolate is made of. As tropical trees go, Cacao is of modest size and height. It only grows to about 10 m to 20 m high. That’s because it is a shade-tolerant ‘understorey tree’. On plantations, where most of them are grown, they are kept much smaller to facilitate easy harvesting.

Cacao trees take about five years to mature and produce fruit, and they can live for over 200 years. But, for commercial purposes, they are considered productive for only about twenty-five years.

The Theobroma genus comprises about 20 species, of which T. cacao is the most widely cultivated one.

 

Its appearance is very distinctive:

Botanical name: Theobroma cacao
Family: Sterculiaceae

Synonyms:

Coco, Cocoa, Chocolate, Cacahuatl, Tlapalcacauatl, Cacauaxochitle (T. augustifolium)

Origin:

Northern parts of South America and Central America

Distribution:

Humid tropics, most notably Central and South America, West Africa and Sri Lanka, Indonesia and the Philippines

Cocoa leaves

Forest & Kim Starr CC BY 3.0 US , via Wikimedia Commons

Leaves

The mature leaves are dark green, large and glossy, very much in contrast to young leaves that are reddish and seem to droop from the end of the branches. They are pretending to be old and not worth munching on. As they mature, they turn dark green and robust.

Although deciduous, Cacao never sheds all its leaves at once. Young and mature leaves grow side-by-side on the same tree. The greyish-brown bark is rough and covered with patches of different coloured lichen and fungi.

 

Cocoa Tree Flowers

Flowers

But what is most surprising about the Cacao tree are its flowers that sprout in clusters directly from the tree trunk and older branches.

Botanically, this is known as a ‘cauliflorous‘ flower formation. The tiny creamy-pinkish flowers are short-lived and last only for a day, and they are fertile only from sunrise and sunset. If they are not pollinated within that time, they will wither and die.

Cacao is ‘self-incompatible’, meaning it cannot pollinate itself. Nor does the wind help with the task. The pollen is too heavy and sticky for the wind to carry. The task falls to various species of tiny insects.

 

cocoa pod
Cocoa pod and seeds

Fruit

From those tiny dangling flowers grow the most weird-looking pods, oblong and tapered at both ends, somewhat resembling a kind of squash.

The pods come in all colours and sizes and can be ribbed with thick skin, or smooth and thin-skinned, depending on the variety. Some pods only grow to about 4 inches long, but some types develop pods that can reach a whopping 12 inches. The immature fruits are green, turning yellow, orange, red or purple as they mature, a process that can take up to five or six months.

Each pod contains between 20 and 60 smooth, white seeds. As long as the pod stays intact, the seeds remain viable, but once opened and the pulp is removed, they dry out and lose their ability to germinate.

Cacao pods are a favourite monkey food. They may be unfamiliar with chocolate, but they are crazy about the delicious sweet and sour fruit pulp that envelopes the seeds.

 

Distribution

Cacao is grown in the tropics, but it is very fussy about its growing conditions. The greatest number of wild varieties are found in the lowland rainforest of northern South America, where Cacao is native. A true lowland rainforest species (never found above 100 ft above sea level), it likes to grow near water, e.g. on river banks or seasonally inundated ground.
Cacao likes it hot and steamy: its distribution range is tightly limited to about 15 degrees of latitude on either side of the equator.

 

Habitat and Ecology

Cacao is a tree of the tropics and very fussy about its growing conditions. Most wild varieties are found in the lowland rainforest of northern South America, where Cacao is native. A true lowland rainforest species (never found above 100 ft above sea level), it likes to grow near water, e.g. on river banks or seasonally inundated ground.

Cacao likes it hot and steamy: its distribution range is tightly limited to about 15 degrees of latitude on either side of the equator.

Cacao needs the shade of taller trees to protect young saplings and their sensitive immature leaves from direct sunlight. High humidity is a necessary prerequisite for healthy growth. But when trees are cut to create plantations, local weather patterns change. It gets drier, which negatively impacts yields and dries out the soil. Climate change also makes the trees more vulnerable to fungi and diseases.

Cacao plays an integral role in rainforest ecology. In natural conditions, it develops a taproot that helps to stabilize the river banks where it prefers to grow. The fruit pulp is a delicacy for many rainforest animals, but monkeys and birds are particularly keen on it.

Aztec preparation of xocolatl

The History of Cocoa

The native people of Central and South America revered the Cacao tree. They had cultivated Cacao trees for several hundred years before the Conquistadores’ invasion.

The Aztecs cultivated several species of cacao, none of which are grown commercially today. They used different species for distinct purposes: The types with the largest seeds were used as currency (money does grow on trees ;-). But it was the species with the smallest seeds, ‘Tlacacahuatl’, which was used to make a sacred beverage called Xocoatl.

 

Cocoa as privilege

Drinking Xocoatl was the privilege of nobles and priests, who consumed it in vast quantities. Moctezuma, the last Aztec emperor, devoured fifty golden goblets daily. This beverage was very different to what we now know and love as drinking chocolate. The Aztec version was savoury, not sweet, and there were many ways to prepare it depending on the occasion.

For general use, roasted Cacao seeds were ground and mixed with Atole (coarse, roasted corn flour) and whisked into a rich foaming brew. Chillies, Vanilla, Cinnamon and salt were added to taste.

 

Ceremonial use of Cocoa

The ceremonial beverage, Xocoatl, was considered as sacred as other psychotropic ritual plants, such as Ololuiqui (Turbina corymbosa) or sacred mushrooms (Psilocybe sp.). The Spanish chronicler Sahagún reports that Cacao, ‘…especially that made with the green, young fruits, has the power to intoxicate, to make one dizzy and to make one drunk…’ He warned against drinking too much of it but says, consumed in moderation, it fortifies the body and spirit.

 

Cocoa as an Aphrodisiac

Xocoatl was a powerful aphrodisiac and stimulating tonic. Moctezuma regularly fortified himself with it before entering the royal harem. The Mixtec, contemporaries of the Aztec, who inhabited the Oaxacan plateau, used Xocoatl in their marriage ceremonies. Chocolate has not lost its aphrodisiac appeal, even now. Chocolate probably ranks as the most popular choice for a romantic gift, next to flowers.

 

Neurochemical research

Neurochemical research has been able to shed some light on this ancient reputation. Scientists at the Neurosciences Institute in San Diego found three compounds in dark chocolate that closely resemble a naturally occurring neurotransmitter known as ‘Anandamide’.
Anandamide, (from Sanskrit Ananda = bliss), links to THC receptor sites in the brain. They produce a similar but less pronounced sense of well-being as Tetrahydrocannabinol, found in Cannabis. The scientists also found compounds (N-acylethanolamines) that block the breakdown of Anandamide [Piomelli, 1996].

 

Anandamide is the primary neurotransmitter present in the uterus during the early stages of pregnancy. It seems like its role is to convey a sense of bliss and contentment to welcome the embryonic spirit into the womb. Chocolate is also rich in Phenylethylamine, the signature compound associated with the euphoric state of being in love.

 

Mistaken identity and its consequences

When Cortés and his men arrived at the shores of the new world, Moctezuma mistook them for ambassadors of the feathered serpent god, Quetzalcoatl. He welcomed them with many fine gifts, including gold, jewellery and precious stones.

Appropriate to the occasion of welcoming divine guests, he also honoured them with a cup of the sacred Xocoatl brew, served in golden goblets. But the Spaniards were more interested in the gold and silver than in the cocoa brew, which they deemed ‘more suitable for hogs than men’. It took many years, but eventually, cocoa grew on them.

chocolateria Arrufat
Libertinus, CC BY-SA 2.0, via Wikimedia Commons

 

 

From Xocolatl to chocolate

Much experimentation and modification of the original recipe eventually produced something suitable for the Hispanic palate. And it soon became a hit.

Credit for it must be given to an order of Spanish nuns who lived in the province of Chiapas in southern Mexico. They learned to roast the cocoa beans, like the Aztecs, but instead of adding chilli and salt, they mixed them with cane sugar, vanilla and cinnamon.
The nuns loved their chocolate drink so much that they refused to abstain from it, even during mass.

Aware of Cacao’s aphrodisiac reputation, the Bishop was alarmed and tried to suppress the new custom. But, the nuns protested, insisting that the chocolate drink helped them overcome ‘the weakness of the stomach’ and even aided their efforts to pray. The Bishop gave in, and the nuns were granted permission to continue their unorthodox ways. And this is how the reformed Xocolatl conquered the world.

 

Cocoa conquers the Old World

When Cortés returned to Spain, among the many wondrous things he brought back was a sack of Cacao beans along with the recipe for the novel beverage. As in the New World, chocolate was, at first, reserved for the nobility. No ordinary mortal could afford its astronomical price. But it became an immediate hit at all the Royal Courts of Europe.

Cunningly, the Spaniards managed to keep the recipe a secret for almost a century. They had begun to plant Cacao plantations in their New World colonies soon after conquering the Aztec Empire, securing their absolute control of the cocoa trade. But ultimately, the secret of the cocoa bean got out, and their monopoly was broken. Other colonial powers established plantations far from the Theobroma’s original homeland – first in Indonesia and the Philippines, and later in West Africa and South America.

Today, Cacao is one of the most significant cash crops for small scale farmers in developing countries. It is worth about $9.5 billion in world trade. Worldwide, more than 4 million tons of Cacao beans are produced annually, more than half of which are grown in West Africa.

 

Hot Chocolate – a drink of the Avant-Garde

By the middle of the 17th century, ‘chocolate houses’ began to appear, rivalling ‘coffee houses’, as meeting places of the Avant-Garde. By the end of the 17th century, hot chocolate had become so popular that the government thought it worthwhile to impose a tax on it!

When the Dutch Cacao producer, Van Houten, invented a new processing method in 1828, drinking chocolate became even more popular. Unprocessed Cacao beans contain up to 53% of fat, making them hard to digest. Van Houten used a hydraulic press to squeeze out the fat content of Cocoa powder, reducing it to 10–13%. The new, lighter chocolate powder proved even more popular. Better still, the cacao butter was not wasted, but was used to improve the consistency of solid chocolate bars.

 

From Cocoa to Chocolate

Solid chocolates also became ever more popular. They were transformed by an innovation introduced by a Swiss chocolate manufacturer, who came up with the simple, but brilliant idea of adding condensed milk to the cocoa butter blend. This creates the familiar creamy texture of milk chocolate. Today, milk chocolate has become the most popular type of chocolate product, and the Swiss are the world leaders in this category. And, they are also world leaders in consumption, with an annual equivalent of 5.5 kg of cocoa beans per capita.

During much of the 19th century, chocolate enjoyed the status of a magical panacea. It was believed to cure just about any ailment. This notion seems a little exaggerated, but Cacao does have some interesting medicinal properties. We will explore these in next week’s post.

Further resources:

International Cocoa organization icco

International Fairtrade / Cocoa

And if you are looking for some delicious AND ethical chocolate, check out my friend Jennifer’s Sombra Buena chocolate.

 

 

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Frankincense (Boswellia sp.)

Frankincense (Boswellia sp.)

by | Dec 10, 2021 | Plant Profiles, Plants & People, Trees

Featured image by Mauro Raffaelli, CC BY-SA 3.0 , via Wikimedia Commons

Plant Profile: Frankincense

Frankincense is well-known as ‘that stuff that is burnt in church’. But what exactly is it, and where does it come from?

In common parlance, ‘Frankincense’ is often used as a generic term for all kinds of incense, but botanically, it refers to oleoresin sourced from  Boswellia trees.

Description:

The Boswellia genus has its greatest distribution in tropical regions of Africa and Asia. It comprises small shrubs or trees that are rich in fragrant oleoresins and well-adapted to arid and inhospitable terrain.

Four species are classified as Frankincense trees:

  • Boswellia sacra (syn. Boswellia carteri, southern Arabia)
  • Boswellia serrata (Indian Frankincense, syn. Boswellia thurifera)
  • Boswellia papyrifera ( Ethiopia, Eritrea, Sudan)
  • Boswellia frereana (Horn of Africa)

The Biblical Frankincense is derived from Boswellia sacra, a small, shrubby desert tree with pinnate leaflets and thorny branches found in Oman. It lives on rocky slopes and ravines.

In India, Boswellia serrata is the most common variety. It is a more stately tree that usually has divided trunks.

Small, 5-petaled whitish-yellow flowers appear in axillary racemes. The trees frequently seem to be growing directly from the rocks and boulders to which they cling with adaptive, disk-like swellings at the bottom of the trunk. But these adaptations only develop in response to the environment, if necessary.

Excessive harvesting reduces the number of flowers and the size and viability of the seeds. Cattle and camels browse on the leaves and branches, especially in times of drought.

Name:

The name ‘Frankincense’ probably came from the old French expression, ‘franc encens’ meaning ‘valuable incense’. Frankincense is also known as ‘Olibanum’, which derives from the Arab word ‘al Luban’, meaning ‘milk’, an allusion to the milky sap that turns into Frankincense when it dries.

Boswellia serrata - Indian Frankincense

Dinesh Valke from Thane, India, CC BY-SA 2.0 , via Wikimedia Commons

History

Familiar by name, yet obscure. The source of Frankincense has been shrouded in mystery since long before the birth of Christ. The origins of its use are uncertain, but it is well-documented that Frankincense was widely used in the Egyptian Temples to honour Ra and Horus. On her epic journey, Queen Sheba brought along numerous Frankincense trees as a special gift for King Solomon. Unfortunately, those trees were doomed. Frankincense trees only thrive in arid conditions and are limited to a specific geographic range. But, it’s the thought that counts. The gift was a significant sign of honour and respect.

Incense fuelled the economy of the Arab world, much as oil does today. Towns positioned at strategic locations along spice or incense routes prospered considerably from this trade. In the Ancient World, Frankincense was more valuable than gold. The obscurity of its origin gave rise to wild tales. Frankincense trees were said to be guarded by dragon-like creatures, ready to strike out at any intruder. Keen to protect their fortunes, traders had invented such terrifying stories to deter enterprising and adventurous young men from going off in search of the trees.

But, scare tactics aside, the long journey across the desert was indeed as dangerous as it was lucrative.

Tree Stewardship

Oman, Somalia and Ethiopia are the most important suppliers of Frankincense today. As in the days of Solomon, the most common use of Frankincense is to honour the Gods. While the average annual quantities used have decreased since Solomon’s times, science has found new applications. Harvesting is still done using the traditional method of bleeding wild trees. Although uncultivated, individual trees ‘belong’  to particular families who live nearby (by unspoken agreement). These families look after the trees and claim the right to harvest them.

In the ancient world, all Frankincense trees were considered the property of the King. It fell on him to negotiate the harvesting rights with the merchants, for a percentage of the profits, of course. Studies show that families who take a ‘guardian’ role towards the trees are more likely to use sustainable practices. Unlike the roaming harvesters, who don’t care much about the welfare of a particular tree, any desert dweller will naturally want to protect the source of their livelihood.

Harvesting

Harvesting Frankincense is a time-consuming process. Several deep incisions are cut into the tree trunk, and a small piece of bark is removed. (According to modern research, more than five incisions causes considerable stress to the trees.) This wounding causes the tree to ‘bleed’, and a milky white substance protrudes that seals and heals the wound to prevent infection. After three months, the resin has hardened enough to scrape off the tree trunk. This ‘bleeding’ process is repeated three times to obtain the highest quality Frankincense. Only the resin collected from the final bleeding is rated as ‘superior quality. Once solidified, the resin is sorted into tears and grains of different colours and sizes. The quality is determined by the degree of opacity. Resin destined for distillation is shipped off while still slightly sticky inside. This indicates a high concentration of volatile oil.

Medicinal uses:

Most Frankincense is used for religious purposes. But it also has a long history as an ingredient of medicines and cosmetic preparations. Early writers such as Pliny, Dioscorides and Avicenna have recorded such uses of Frankincense as were common in their time. But in time, the therapeutic properties had been all but forgotten – until some years ago, when new studies found Frankincense effective for a wide range of hard-to-treat diseases.

The ethnomedicinal applications of Frankincense are very diverse, ranging from dental disease to skin conditions, respiratory complaints and digestive troubles. In the Ancient World, every part of the tree was used: root, bark, bud, flower, fruit and resin and essential oil.

Astringent

The powdered bark was used to make an astringent paste for swellings (oedema). Mastitis was treated by boiling the dried or fresh gum in the patient’s own milk to form a thick paste for topical application.

The bark’s astringent properties are used in ointments for treating sores and chapped skin. Emperor Nero is said to have used a pomade made from a mixture of resin and wax to disguise the tell-tale bags beneath his eyes that appeared after a night of excess.

Vulnerary

The charred, powdered bark was kept as a first aid application for wounds. Mixed with water, it made an instant dressing for injuries and burns. If available, the fresh bark was also used for this purpose. The lotion provides an excellent antiseptic wash to clean dirty or infected wounds.

The bark was also used for setting broken bones. Two pieces of the wood were used as splints, with strips of Frankincense bark wrapped around them to hold in place a bandage that had been soaked in soft resin. The drying resin helped to provide firm support for the mending bone.

Child Birth

Frankincense also played a role in women’s medicine. Chewing the bark alleviates morning sickness. A potion made from snakeskin and resin dissolved in wine was said to ease difficult or prolonged labour. Frankincense was burnt for 40 days during and post-partum, to protect mother and child. Squatting over the smouldering resin was said to restore muscle tone and support healing of any laceration, and speed recovery from the strains of labour.

Eyes

Its antiseptic properties have also been used to treat ophthalmic diseases. In Ethiopia, the soot of the resin is believed to be beneficial for the eyes. Sore or tired eyes are fumigated with the smoke.

Teeth and gums

The resin was chewed as a ‘therapeutic chewing gum’ to stimulate the gums and treat dental infections such as gingivitis.

Stomach problems

A bark decoction makes a stimulating and cleansing tea. The inner root of young trees was chewed as a remedy for stomach problems. Buds and fruit were used as a cleansing tonic for the digestive system.  A decoction of Frankincense resin, cinnamon and cardamom, settles an upset stomach. 

Other uses

Even the incense was used therapeutically. The smoke acts as an expectorant and clears phlegm from the head and chest. It purifies the air and relaxes the patient while soothing their pain, especially severe headaches.

Frankincense smoke is a powerful insect deterrent, a  property that helps prevent serious diseases like malaria or dengue fever.

Frankincense is said to improve memory and dispel lethargy. An old recipe for an epilepsy treatment recommends boiling it in with hare’s lungs in white wine.

Modern uses

Modern research has focused on Olibanum’s anti-inflammatory properties, particularly to treat rheumatoid arthritis and soft tissue rheumatism. Frankincense extract is also effective for gastrointestinal diseases such as colitis and Crohn’s disease.

Censer

OTHER USES

Perfume

The clean, fresh, balsamic fragrance of Frankincense has perfumed our world since ancient times. Originally, the term ‘to perfume’ derived from the Latin ‘per fume’ meaning ‘to pass something through the smoke’.  Clothes were fumigated, not only to give them a pleasant scent but also to kill any pathogens. Perfuming is essentially a cleansing practice.

Today, the perfume industry uses Frankincense essential oil as a fixative to scent soaps, detergents and countless cosmetic articles.

The ancient Egyptians were pioneers in cosmetics and perfumery. Among other things, they invented the eyeliner known as Kajal (Khol). Khol was made from charred powdered resin mixed with waxes, oils and other substances. It was believed to protect and improve vision. Modern versions are still available, but no longer contain Frankincense.

Fresh, soft Frankincense resin can be used to seal minor cracks in pottery and other utensils. The gum hardens upon drying.  In combination with other resins, it has been used to caulk ships.

In Ancient Egypt, Frankincense and Myrrh were essential items in the funerary rites used to embalm the mummies in preparation for the afterlife.

Tree Profile: Yew (taxus baccata)

Tree Profile: Yew (taxus baccata)

by | Nov 26, 2021 | Uncategorized, Mythology, Plants as Medicine, Trees

Yew – Taxus baccata

Few western European trees are as enigmatic as the Yew. Dark, brooding and sometimes eery, each Yew tree very much has its own personality.

 

Botany:

The Yew (Taxus baccata) is an evergreen, needle bearing conifer- but a strange one. Instead of wooden cones, it shelters its seed in a bright red, soft and slimy fruit cortex that takes the shape of a cup (Baccata = cup). The seeds, hidden within the ‘cup, along with all other parts of the tree except for the arils, are highly poisonous.

Yews are dioecious; female and male flowers appear on different trees, but only the female flower-bearing tree produces the fruits. They reach sexual maturity between 15-30 years of age, pretty young, considering their potential lifespan! It is difficult to measure the exact age of a Yew tree because most of them become hollow as they age, which means we can’t count tree rings. But in Britain and Europe, there are several, estimated to be between 2000 and 4000 years old!

As trees go, their height is not that impressive. Yews only grow to about 10-20 m tall, but they can develop an admirable circumference of more than 6 m. Unlike most conifers, they do not produce any resin.

Yews have a dark appearance, and they love shady spots. But they tolerate the sun if they were exposed to it from the start.

Yew of If d'Estry, Normandy

Roi.dagobert, CC BY-SA 3.0 via Wikimedia Commons

Mythology:

As an evergreen with a seemingly infinite lifespan and a somewhat dark, mysterious Gestalt, it is not surprising that Yews have been linked to the realm of the Dead. In Britain, the oldest Yews are found in cemeteries, often in association with a sacred spring. Britain’s oldest one is the Yew of Fortingall, in Perth, Scotland, believed to be some 3000 years old. However, its age is difficult to verify since it is hollow, and young shoots that grow from the centre, fuse with older ones, thus constantly rejuvenating itself.

In the runic alphabet, the Yew is associated with Eiwhaz Rune, which signifies the shortest day of the year, the eve of the winter solstice. It symbolizes the dying Sun but also its rebirth, since Yews possess this magic power of rejuvenation. Yews cast the dark, silent cape of eternity over the departed and take care of their souls in the afterworld until the time of their rebirth has come.

Thus, Yews are symbolic of life and death, seen as complementary forces rather than polar opposites, and joined at the threshold at the beginning and the end of our lives.

Folklore: Sleeping under a Yew tree was thought to induce prophetic dreams and offer a glimpse beyond the veil.

 

 

Properties and uses

Yew BerryA couple of thousand years ago, Yews were common throughout Europe and Britain. But they are slow-growing trees that were decimated for the sake of war. Yews were the primary source-wood for longbows – which, before the invention of gunpowder, were the most common weapon of war. Even today, Yew bows are used for making longbows for archery. In medieval times, Yews were planted in and around castle grounds to ensure a steady supply.
The wood, which is both strong and elastic, is superbly suited for this purpose. Archaeological evidence has shown that it has been used to make weapons since prehistoric times. Palaeolithic spears and arrowheads made of Yew have been found in a marl pit in southern England. The arrowheads had been dipped in an arrow poison made of Yew, Hellebore and Hemlock to make them extra lethal. Yews alkaloids first stimulate, then slow the heart rate, causing the victim to fall into a coma and die within an hour and a half. The oldest such spear, some 150 000 years old, was still stuck between the ribs of a mammoth carcass.

By the 16th century, Yews were almost extinct. But, they were saved by the invention of gunpowder which was invented right around that time, allowing Yew populations to recover.

 

Medicinal uses:

In recent times, Yews were in the news for saving lives. A compound found in the Pacific Yew, Taxus brevifolia, was discovered to have cytostatic properties, capable of inhibiting cancerous growth. But both, the Pacific Yew and its habitat are threatened. A single tree only yields 3 kg of bark, containing only 1g of Taxol, the sought-after active compound. Taxol proved highly effective in chemotherapy for treating breast- and ovarian cancer, and thus was in high demand. Given the slow growth and endangered status of the trees, the situation was precarious. Scientists were struggling to find a way to synthesize Taxol from other sources. But eventually, the breakthrough came in the 1990s. Scientists had managed to create Taxol molecules from Taxus baccata, the European Yew, which is a far more common species.

Thus, the Yew has held true to its ancient promise as a harbinger of both death and life.