A wafer is a thin, flat, and often sweet food item. The term can be used to describe several different types of food items, including chips, biscuits, Necco, Nilla, CORNET, disks, and discs. Chips are typically made from potatoes and are fried or baked. Biscuits are small, round, and usually sweet cakes. Necco is a type of candy made by the New England Confectionery Company. Nilla is a brand of vanilla-flavored wafers. CORNET is a type of French pastry. Disks and discs are thin, round pieces of food.