The term 'They Have Edible Shells' can be summarized by two food items: tacos and pies. Tacos are a Mexican dish consisting of a folded or rolled tortilla filled with various ingredients such as beef, chicken, beans, cheese, lettuce, and tomatoes. Pies are a type of pastry dish that is usually filled with sweet or savory ingredients and then baked in an oven. Both tacos and pies have edible shells, making them the perfect answer to this crossword puzzle.