McDonald’s introduced the Big Mac in 1967 as its most famous signature burger.
Franchisee Jim Delligatti created the sandwich for the Pittsburgh area because he wanted a larger product for customers seeking a more substantial meal. It used two beef patties, a three-part bun, lettuce, cheese, pickles, onions, and the sauce later strongly associated with the brand.
The Big Mac was first sold in selected markets before becoming a national menu item in the United States in 1968. Its distinctive structure made it easy to identify in advertising and helped give McDonald’s a flagship product.
The sandwich’s introduction is often dated either to 1967, when it debuted regionally, or 1968, when it became national. The earlier year is the product’s launch year.