Vegan's staple is a term used to describe the main food items that are consumed by vegans. SOY and tofu are two of the most common vegan staples, with SOY being a three letter word and tofu being a four letter word. SOY is a plant-based protein that is derived from soybeans and is often used as an alternative to animal proteins. Tofu is a product made from curdled SOY milk and is a popular meat substitute for vegans. Both SOY and tofu are versatile ingredients that can be used in a variety of dishes.