Soy beans are a species of legume and native to East Asia. They are widely grown because they are a cheap source of protein and for use in making vegetarian foods such as TVP (texturized vegetable protein). The soy bean can be found in many dairy substitutes as well and it known for its significant amounts of phytic acid - dietary minerals and B vitamins. You can use soy beans to make home-made milk - tofu or simply boil them to eat. They are so nutritious and tasty that even the cooking liquid can be used as a nutritious stock for making soups.