National Cheeseburger Day 2022: Free cheeseburgers at McDonald's, Burger King, Shake Shack

National Cheeseburger Day 2022: Free cheeseburgers at McDonald’s, Burger King, Shake Shack

National Cheeseburger Day is Sunday, September 18. The term “the cheeseburger” was trademarked by Louis Ballast of Denver’s Humpty Dumpty Drive-In in March 1935, but restaurateurs from California to Kentucky claimed the popular sandwich. Whatever its origins, the cheeseburger is a pillar of the American menu: we consume nearly 50 billion hamburgers a year, and …

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