What was McDonald's first menu item sold under the Big Mac name?

The Big Mac was the McDonald's menu item sold under the Big Mac name beginning in 1967.

Franchisee Jim Delligatti created the sandwich in 1967 at a McDonald's restaurant in Uniontown, Pennsylvania. It used two beef patties, a middle slice of bun, lettuce, cheese, pickles, onions, and a special sauce. The product was designed to provide a larger sandwich for customers who wanted a more substantial meal.

The sandwich first appeared in select locations before being introduced nationally in the United States in 1968. Its name and layered construction made it a powerful piece of product branding, and the Big Mac later became one of the most internationally recognizable McDonald's menu items.

The Big Mac is sometimes dated only to 1968 because that was its national U.S. launch. The earlier 1967 introduction in Delligatti's restaurants is the key detail behind the two dates.