The Big Mac inspired the McDonald's advertising jingle beginning “Two all-beef patties.”
The jingle described the sandwich's main ingredients in a compact, memorable sequence: two beef patties, special sauce, lettuce, cheese, pickles, onions, and a sesame-seed bun. It became a branding device because customers could recite the product description as a piece of advertising.
The Big Mac itself was created by Jim Delligatti, a McDonald's franchisee, and introduced in 1967. Its three-part bun and special sauce made it distinct from the chain's simpler hamburgers. The sandwich's name and ingredient rhyme helped it become a lasting symbol of McDonald's menu identity.
The jingle is often remembered as a general McDonald's slogan, but it specifically promoted the Big Mac. Regional menus and recipes can vary, yet the classic ingredient list remains strongly associated with the sandwich.