Shell food is a term used to describe food that is served in a shell or container, such as eggs, tacos, and peanuts. Eggs are a common shell food, often boiled or scrambled and served in their shells. Tacos are a popular Mexican dish consisting of a corn or wheat tortilla filled with various ingredients, such as meat, cheese, and vegetables. Peanuts are a type of legume that is often served in the shell, either raw or roasted.