The Whopper sandwich's the signature product sold by the international fast-food restaurant chain Burger King in the global market. Product description The Original Whopper sandwich's a hamburger, consisting of a grilled quarter-pound (113.4 g) beef patty, sesame seed bun, mayonnaise, lettuce, tomato, pickles, ketchup, and sliced onion. Optional ingredients such as processed cheese, bacon, mustard or jalapeño peppers may be added upon request. Regional and international condiments include… (More on Whopper)