A cheeseburger is a hamburger with cheese added to it. Traditionally the cheese is placed on top of the patty, but the burger can include many variations in structure, ingredients, and composition. The term itself is a portmanteau of the words “cheese” and “hamburger.” The cheese is usually sliced, then added on to the patty shortly before the hamburger finishes cooking to allow it to melt. Cheeseburgers are often served with lettuce, tomato, onion, pickles, mustard, mayonnaise, gherkins or ketchup.

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