Whole soybeans are the base ingredient in foods such as tofu, soy nuts, soymilk, soy flour and tempeh. Preferably more like 8-10 servings. But, you have to remember that a serving isn't one per each time you sit down to eat. If you've had cancer or are at high risk of cancer, you should aim for at least 8 to 10 servings of fruits and vegetables daily. Incorporating soy products into your diet will help you meet these goals.
Most soy products are available at any supermarket.
Textured soy or textured vegetable products have a texture similar to that of ground beef. It is made of defatted soy flour which is processed into small or large chunks. The product is sold in two forms. The other form is in the refrigerated section of most major grocery store chains. It is often referred to as 'veggie ground round'.