The Big Mac was marketed with the slogan “The most famous burger in the world.”
McDonald's introduced the Big Mac in 1967 at a franchise restaurant in Uniontown, Pennsylvania, and added it to the national menu in 1968. Franchisee Jim Delligatti created the sandwich, which used two beef patties, a special sauce, lettuce, cheese, pickles and onions on a three-part sesame-seed bun.
Its layered construction and distinctive name made the Big Mac an especially powerful branding symbol for McDonald's. The sandwich also became recognizable outside the restaurant through advertising, packaging and later references to the “Big Mac Index.”
The Big Mac is sometimes credited to McDonald's corporate chefs or confused with the Quarter Pounder. The specific creator was franchisee Jim Delligatti, while the famous-burger slogan identified the product's global branding role.