Corned beef hash is a fried dish of chopped or shredded corned beef, diced potatoes, and onions, cooked until the mixture develops a crisp, browned exterior while staying tender inside. It developed as a way to use up leftover corned beef and is a classic American diner breakfast dish, often served with eggs and toast.
It also appears as a topping for baked potatoes or nachos, or can be formed into patties and pan-fried into hash cakes; common additions include bell peppers, carrots, or cheese.