The Big Mac became a major McDonald’s brand in 1968 after being created by franchisee Jim Delligatti.
Delligatti developed the sandwich in the 1960s while operating McDonald’s restaurants in the Pittsburgh area. It used two beef patties, a special middle bun section, lettuce, cheese, pickles, onions, and sauce. The product was designed to offer a larger, more substantial hamburger while still fitting McDonald’s standardized production system.
The sandwich first appeared regionally before McDonald’s introduced it across the United States in 1968. Its name became one of the company’s strongest product brands and eventually gained recognition independently of the restaurant’s wider menu.
The Big Mac is sometimes confused with other large McDonald’s sandwiches, particularly the Quarter Pounder. The defining distinction is the Big Mac’s two-patty construction and three-part bun, features that became central to its visual and verbal identity.