A burger, is a sandwich consisting of one or more cooked patties. The patty may be pan fried, grilled, or flame broiled. Burgers are often served with cheese, lettuce, tomato, bacon, onion, pickles, or chills; condiments such as mustard, mayonnaise, ketchup, relish, or "special sauce"; and are frequently placed on sesame seed buns. A burger topped with cheese is called a cheeseburger.

Burgers are sold at fast-food restaurants, diners, and specialty and high-end restaurants (where burgers may sell for several times the cost of a fast-food burger, but may be one of the cheaper options on the menu). There are many international and regional variations of the burger. Burgers are usually a feature of fast food restaurants. The burgers served in major fast food establishments are usually massproduced in factories and frozen for delivery to the site. These burgers are thin and of uniform thickness, differing from the traditional INDIA. Most burgers are round, but some fast-food chains, sell square-cut burgers. Burgers in fast food restaurants are usually grilled on a flat-top, but some firms, such as Burger King, use a gas flame grilling process.