A burger is a sandwich made with a cooked patty (usually beef, but sometimes chicken, turkey, or vegetables) served inside a sliced bun. The patty is typically round and flat, grilled or fried until it's hot and juicy, then topped with things like cheese, lettuce, tomatoes, pickles, ketchup, and mustard.

Today, burgers are one of the most popular foods in the United States and around the world.

When you see words like cheeseburger (topped with melted cheese) or veggie burger (made from vegetables or plant-based ingredients instead of meat), the “burger” part tells you it's served in a bun as a sandwich. Some restaurants serve creative variations with unusual toppings, but the basic concept stays the same: a flavorful patty tucked into a soft bun, perfect for eating with your hands.