Who created the Big Mac, McDonald's signature burger introduced in 1967?

Franchisee Jim Delligatti created the Big Mac, McDonald's signature burger introduced in 1967.

Delligatti operated several McDonald's restaurants in the Pittsburgh area. He developed a larger double-decker sandwich with two beef patties, a middle bun, lettuce, cheese, pickles, onions, and special sauce to appeal to customers seeking a more substantial meal.

The sandwich first appeared in the Pittsburgh area before McDonald's introduced it nationally in 1968. Its name was chosen after other proposed names, including Aristocrat and Blue Ribbon Burger, were rejected.

The Big Mac became a major part of McDonald's visual and advertising identity. Its three-part bun and layered construction also made it one of the easiest menu items to recognize internationally.