Burger, or hamburger, is the name given to a grilled beef patty usually placed inside a sliced bread roll. Hamburgers are often served with lettuce, bacon, tomato, onion, pickles, cheese and condiments such as mustard, mayonnaise, ketchup and relish. A burger is usually accompanied with lots of French fries. With time, other ingredients, like potato, vegetables, fish and chicken, have started replacing the beef in the patty.