What are the common varieties of soybean?

Soybeans belong to the pea family. Soybeans come in many colors, including:

• Green soybeans: Young green soybeans are also called edamame. People can steam and eat out of the pod as an appetizer. Shelled edamame is also available in salads, stir-fries, and soups.
• Yellow soybeans: Producers typically use yellow soybeans to make soy milk, tofu, tempeh, and tamari and this could also play a role in the production of soy flour for baking.
• Black soybeans: Several Asian food cultures use simmered or fermented black soybeans in traditional dishes.

Source: What To Know About Soy