Krystal's product line centers on a square hamburger patty slider with a steamed bun, together with diced onions, pickle, and mustard, and collectively called a "Krystal". Small hot dogs called "pups" are also featured menu items. The chain has occasionally expanded its menu to include larger burgers, such as the "Big Angus Burger", a full-size hamburger made of 100% Angus beef.
