The Quarter Pounder is a hamburger product sold by international fast food chain McDonald's. The burger contains a patty with a precooked weight of a quarter of a pound (113.4 g), two buns, two slices of American cheese, pickles and onions, as well as ketchup and mustard. The Quarter Pounder was created by Al Bernardin, a franchise owner, in Fremont, California, in 1971.