The hamburger is considered a national dish of the United States. In the United States and Canada, burgers may be classified as two main types: fast food hamburgers and individually prepared burgers made in homes and restaurants. The latter are often prepared with a variety of toppings, including lettuce, tomato, onion, and often sliced pickles (or pickle relish). French fries often accompany the burger. Cheese (usually processed cheese slices but often Cheddar, Swiss, pepper jack, or blue), either melted directly on the meat patty or crumbled on top, is generally an option.