The No. 2 fast-food chain's double-decker Big King Burger features two grilled beef patties, with melted cheese, lettuce, onions, pickles and dressing on a sesame bun.
The quarter pound of meat means it outweighs McDonald's signature Big Mac, which contains a puny 3.2 ounces of meat before cooked.
The new take on an American sandwich staple comes as competition in the fast-food space has become fiercer. McDonald's, the world's biggest hamburger chain, just reported U.S.