McDonald's introduced the Big Mac in 1967, making it one of the brand's most recognizable products.
The hamburger was created by Jim Delligatti, a McDonald's franchisee in the Pittsburgh area. It used two beef patties, a middle section of bun, lettuce, cheese, pickles, onions, and the sauce later widely associated with the sandwich.
The Big Mac first appeared in selected markets before being added to the national menu in the United States in 1968. Its stacked shape and distinctive name made it especially useful in advertising and helped turn a menu item into a global brand symbol.
The introduction year is sometimes confused with 1968, because that was the year of its nationwide U.S. rollout. The product itself debuted in 1967 in the Pittsburgh region.