Vegetarian staples are foods that are consumed regularly by vegetarians as part of their diet. Tofu, SOYBEAN, and SOY are all common vegetarian staples. Tofu is a food made from curdled SOY milk that is high in protein and low in fat. SOYBEAN is a legume that is high in protein and fiber and is often used to make products such as SOY milk and tofu. SOY is a plant-based protein that is derived from soybeans and is used in many vegetarian dishes.