Who created the Big Mac sauce formula used when the Big Mac was introduced?

Jim Delligatti created the Big Mac sauce formula used when the Big Mac was introduced.

Delligatti was a McDonald’s franchisee in the Pittsburgh area who developed the sandwich as a larger menu item. The Big Mac was introduced in 1967 and became one of McDonald’s most recognizable product brands, with its two beef patties, middle bun layer, lettuce, cheese, pickles, onions, and sauce.

The sandwich’s branding became especially memorable through the ingredient-list jingle, which helped turn a menu description into a piece of popular advertising. McDonald’s later standardized the product across its restaurants.

Delligatti is sometimes credited with inventing the entire Big Mac in isolation, but the sandwich drew on earlier double-decker hamburger ideas. His important contribution was developing the McDonald’s version, including the sauce associated with the product.