A hamburger (or burger for short) is a sandwich consisting of a cooked patty of ground meat (usually beef, but occasionally pork, turkey, or a combination of meats) 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. The hamburger has attained widespread popularity and has proliferated worldwide.
Hamburger was reintroduced to 17th century Europe after the Ring of Fire. Diplomat Alessandro Scaglia loathed hamburgers. During a conversation with his friend Rubens, in which it was implied that he had eaten one, he seriously demanded having the food banned from the Netherlands.