The Amazing Soybean!

Part 1 - Growing Soybeans

The soybean is a leguminous plant belonging to the family Fabaceae. It can grow up to 6' tall and has white or purple, self-fertile flowers. The actual bean varies in colour somewhat, but is usually yellow, green, black or brown. Soybeans are grown mainly in the USA, China and Brazil. It is possible to grow them in the UK, but on the whole they are always under stress here and do not grow terribly well. For good bean production, soybeans need a short daylength (usually under 12 hrs), a July temperature of over 16 degrees C and good rainfall when they are flowering. They like to be grown in full sun, but will grow in most types of soil. In the UK, seeds should be sown around mid-May at a depth of 1-2" inches, spacing the seeds 3" apart and allowing 1 ft between rows. Fresh, green beans can usually be harvested by early August, but if dried beans are required then leave the pods on the plant until they turn a dark tan colour - usually around September/October.

In 1993 I tried to grow some soybeans in my veganic garden. As I was unable to purchase any suitable seed from a British seed supplier, at this time, I experimented by planting some dried soybeans which I had purchased in the health shop and surprisingly enough, most of these dried beans germinated! I planted the 'seeds' (known as Holland & Barrett variety) in my propagator in mid-April and the resulting plants were then potted up and placed outside on a sunny terrace when all the frosts had finished at the beginning of June. Ordinary soil was used in the pots and the plants were all flowering well by May - they normally flower in late June. Small bean pods appeared on the plants from mid-June onwards and I harvested the beans in early September when the pods had turned a dark tan colour. The yield was poor, but I dried and saved the seeds from the tallest plants for use as seed stock the following year. I experimented with my soybean plants for several years and had quite a lot of fun trying to develop a 'giant' British soybean! However, after achieving a 'tall' plant of only 62 cm in height and a continually low yield of bean pods on the plants, I decided that it was time to stop the experiment and grow something which would actually provide me with something to eat. If anyone is interested in growing soybeans in the UK, then I would recommend that they read 'The Soybean Grow and Cookbook' by R.G Whisker and P Dixon - I obtained a copy of this book from the public library. It's an interesting and inspiring, little book and incidentally many of the soybean recipes are vegan. However, it's rather out-of-date now and I don't think that the varieties of soybean - Swedish Fiskeby V and Gemsoy 11 - recommended by the authors are still available, so if you want to grow some beans, try using the variety 'Envy' instead. 'Envy' can be obtained from the 'Thompson and Morgan' mail order seed catalogue - see mail order section below for their address details.


Part 2 - Cooking With Soybeans

Soybeans are a very good source of cheap protein and as well as being used as livestock feed, they are eaten by millions of people all over the world. Containing about twice the amount of protein as meat (2 oz soybeans contain a similar amount of protein to 4 oz of meat) soybeans also supply lecithin (a cholesterol dispersant), calcium, omega-3 fatty acids, folate, iron, copper and the vitamins A, B and E. Soybeans have quite a high fat content and are lower in fibre than other types of beans.

Although soybeans and their products have been eaten in the Far East and Southeast Asia for thousands of years, it is only fairly recently - in the last two or three decades that soybean products have become popular as a source of protein for vegetarians and macrobiotics in the West. If you are not already a regular user of soybean products, then you may be feeling a bit puzzled about how to use soybeans and soybean products. If so, then read on and I will try to explain what they all are!

The soybean is a remarkable and extremely versatile, little bean which can be cooked in many different ways. However, in most cases, dried soybeans do need to be soaked before they are cooked, so either leave them to soak in a bowl of cold water overnight, or if you are in a hurry cover the beans with boiling water and leave them to soak for 2-3 hours instead. The soaked beans can then be cooked in casseroles or stews, pressure cooked - they take 25 mins in my model - or simmered in a pan of water for about 1 and a half to 2 hours. (Incidentally, soybeans will cook more rapidly and be more digestible if a small piece of kombu or wakame sea vegetable is added to the cooking water.) After cooking, soybeans can be used in many recipes, in much the same way as you would use other types of beans. For example: they can be eaten cold in salads, blended with chopped onion and vegan mayonnaise to make a tasty sandwich spread, made into pate, added to soups, or they can be mashed up and used in shepherd's pie, burgers, bean roasts or bean loaves. You will find quite a few recipes which use cooked soybeans (and the soybean product tofu) in 'CalciYum' by David & Rachelle Bronfman. On page 145 of this book, there is an interesting recipe called 'Nutty Soybean Treat' where soaked soy beans are roasted over high heat for 3-4 mins - a bit like making popcorn, then using medium heat they are browned for a further 8 minutes, before adding some canola oil and garlic salt and cooking for a final 2 minutes. The browned, slightly cooled beans are then eaten as a tasty, calcium-rich snack.

If simmering soybeans sounds too much like hard work, then you may be interested to know that there are several far quicker ways of preparing soybeans. Dry, unsoaked beans can simply be ground up in a coffee grinder and then quickly cooked in home-made soups. Alternatively, soaked beans can be drained, patted dry and then roasted under a medium grill until brown. Leave them to cool, grind them up and add the toasted mixture to crumble toppings, breakfast cereals or cake mixtures. If you are able to grow your own soybeans, then fresh green soybeans are not only delicious, but can also be cooked very quickly. In Japan, for example, green soybeans are often eaten as a nutritious snack whilst watching TV. Steam the green beans for 5 mins, let them cool slightly, press the pods and squirt the beans straight into your mouth! Finally, like many other legumes, soybeans can simply be sprouted and either eaten raw in salads, or if you prefer to eat your sprouts cooked, then lightly steam or stir-fry them instead.

So that covers some of the ways of preparing whole soybeans, but what about all of the soybean products? What do you do with them? Soybean products are often used in vegan, macrobiotic and Oriental cookery and can usually be purchased ready-made from health shops and supermarkets, or by mail order. Some soybean products can even be made at home e.g. tempeh, miso etc.

Soy Bean Products:

Fermented Soybean Products:

  1. Natto

    Natto is a fermented soybean product which is high in protein, calcium and iron and aids digestion. It can be made at home if you have a pilot light in your oven, or it can sometimes be purchased frozen from natural food stores. Natto is usually served as a garnish on top of rice or on buckwheat noodles, but it can be sauteed, deep fried, or simply served as a side dish. Resembling baked beans connected by sticky threads, natto has a strong odour and is commonly eaten in a macrobiotic diet. It's usually not terribly easy to purchase ready-made natto, but kits are available from Future Foods (see mail order section).

  2. Tamari

    Tamari and shoyu sauce have been used in Far Eastern cooking for thousands of years and are now often used in macrobiotic and vegan diets too. Good quality tamari is made from organically grown soybeans, wheat, spring water and unrefined sea salt and takes several years to ferment in wooden kegs. Unfortunately, many modern soy sauces are not produced with organic ingredients and often contain monosodium glutamate or other additives. Meridian produce a good quality tamari soya sauce and this wheat-free version does not contain any artificial additives or preservatives. It's produced in Japan, using traditional methods. Look out for it in your health shop, where you may also come across the Clearspring range of organic tamari and shoyu sauces which are also very good. (Incidentally, Clearspring products can be obtained by mail order from 'Pure' - see mail order section for more details.) Tamari is a dark-brown liquid, which is high in iron and thiamine. It is often used as a seasoning instead of salt and can be used in stir-fries, salad dressings, to flavour soups, over vegetables or noodles, or in marinades. However, it is high in salt, so if you need to watch your salt-intake, then use 'Bragg's Liquid Aminos' instead.

  3. Miso

    Miso is a fermented soya bean paste, made from cooked soybeans, koji, (a mold - Aspergillus oryzae - which aids fermentation) sea salt and various grains e.g. barley or rice. Like tamari, miso is aged in wooden kegs for at least a year. It is used in Far Eastern cooking and is commonly eaten by vegetarians and macrobiotics. Non-pasteurized miso contains living enzymes (lactobacillus) which are thought to facilitate digestion and it is also a rich source of protein, calcium, linoleic acid, many vitamins and a substance known as zybicolin which has been shown to remove radioactivity, heavy metals and other pollutants from the body. There are many different types of miso available including: barley miso (mugi miso), hatcho miso (made only from soybeans and sea salt), brown rice miso (genmai miso), kome miso (made from white rice) and natto miso which is made from soybeans and ginger. Miso is usually added to soups, casseroles or stews, but it can also be mixed with tahini to make a delicious sandwich spread, or used to make a pizza topping. Try not to cook miso for too long - add it to dishes at the end of the cooking time, as boiling it will destroy its valuable enzymes.

  4. Tempeh

    A popular food in Indonesia, tempeh is also eaten by many vegetarians and macrobiotics and has a meaty texture (resembling pork or chicken) and a 'nutty', 'mushroomy' or 'yeasty' taste. It is high in protein and is made by fermenting soybeans with the enzyme Rhizopus oryzae. Ready made tempeh can be purchased in some health food stores, or it can be obtained by mail order from Pure for £3.49. It is also fairly easily to make tempeh at home using a special kit. (Tempeh kits can be obtained from Future Foods and from PhytoFoods - see mail order section.) Tempeh is usually added to stews and soups, but it can also be made into sandwiches, burgers, croquettes, stir-fries and kebabs. You will find some interesting tempeh recipes in the book '365 Plus One Vegan Recipes' by Leah Leneman (p.96-99) and there is also quite a nice collection of tempeh recipes in the booklet 'Cooking With Vegetarian Proteins' by Montse Bradford.


Soya and Health

There is now a fair amount of evidence to suggest that certain phytochemicals found in soybeans can help to prevent disease. Of particular interest to researchers is the isoflavone, genistein, which like the drug tamoxifen, seems to be able to block oestrogen's ability to stimulate malignant changes in the breast. Other studies have shown that people who regularly consume soy have a reduced risk of developing certain cancers, especially those of the breast, colon, rectum, stomach, lung or prostrate and that soy consumption is also strongly linked to a reduced risk of developing heart disease. Soy has been shown to lower LDL cholesterol levels and has been used to treat hypercholesterolaemia. And early trials to study whether consuming soy products can relieve menopausal symptoms, such as night sweats and hot flushes, are yielding promising results, making it likely that soy could eventually be used as a natural alternative to hormone replacement therapy (HRT).


Further Reading:


Mail Order Suppliers (UK):

  1. Pure Multi-Nutrients, 8 Victory Place, Crystal Palace, London SE19 3RW.
    Supplies some soybean products, such as miso, tempeh, tofu, as well as organic soybeans. Ring 0181 771 4522 for a catalogue.

  2. PhytoFoods, Middle Travelly, Beguildy, Knighton, Powys LD7 1UW.
    Sells tempeh kits. (Price £10.00.) E-mail polly@micropix.demon.co.uk for more information, or visit The Tempeh web pages. (Incidentally, this website also has a nice collection of raw and cooked tempeh recipes.)

  3. Thompson & Morgan, Poplar Lane, Ipswich, IP8 3BU. Tel: 01473 690869.
    Mail order seed catalogue selling 100 'Envy' soybean seeds (code 547) for £2.49 plus £0.75 postage.

  4. Future Foods, P.O. Box 1564, Wedmore, Somerset. BS28 4DP.
    Sells kits for making miso, natto, shoyu and tempeh. Visit the Future Foods website for more details.

  5. Amazon Books (UK) - On-line bookstore supplying many soybean recipe books.

(* If anyone in the USA is looking for a mail order supplier of soybean seeds, then I think that it may be possible to obtain them from: Johnny's Seeds, Foss Hill Rd., Albion, Maine 04910, USA. Please let me know if you are successful and I will update this file.)


December 1998 Issue
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Copyright © Pauline Lloyd 1998