What's The Difference Between A Big Mac And A Whopper?

There's nothing mysterious about the world's two most famous burgers. Burger King's Whopper, invented in 1957, is a quarter-pound flame-broiled burger plus fixings. McDonald's Big Mac, invented in 1967, is two 1.1-ounce patties separated by a third bun, plus cheese, fixings, and a special sauce that tastes like mayonnaise plus ketchup. The Big Mac also uses dehydrated onions instead of fresh. If McDonald's patrons want that extra meat, they can order a Quarter Pounder, which is basically a Wh...