The Big Mac creator, McDonald's franchisee Michael James Delligatti, has died aged 98.
He invented arguably the world's most famous the burger in 1967 because his customers wanted more than the traditional hamburger.
However at the time his iconic invention was almost rejected by McDonald's who were happy with the more limited menu at the time.
Billions of Big Macs have since been sold but Delligatti received nothing in royalties.
McDonald's quoted the Pittsburgh, Pennsylvania, restaurant franchisee as saying: "I would never have dreamed that my creation would turn into a piece of Americana."
His son, also called Michael, told Associated Press that he called it the Big Mac because "Big Mc sounded too funny".
In a statement, Delligatti's family said he was a "spirited and generous philanthropist" who had helped refugee families get treatment for their children.
McDonald's said that he was a "legendary franchisee" who had made a "lasting impression".
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