Soybean is a source of both oil and food. It is a type of legume, which is a plant in the Fabaceae family. Soybeans are native to East Asia and are widely cultivated for their edible bean, which has numerous uses. The oil from soybeans is used in a variety of products, including biodiesel fuel, cooking oil, and margarine. The beans are also used to make tofu, tempeh, and other food products.