Lionel Sternberger is reputed to have introduced the cheeseburger in 1924 at the age of 16. He was working as a fry cook at his father's Pasadena, California, sandwich shop, "The Rite Spot", and "experimentally dropped a slab of American cheese on a sizzling hamburger."

By 1790, American-made cheddars were being exported back to England. According to Robert Carlton Brown, author of The Complete Book of Cheese, what was known in America as yellow cheese or store cheese was known as American cheddar or Yankee cheddar back in England.

Traditional cheeseburgers are made from beef, which comes from cattle.

Lionel Sternberger was running his father's diner (The Rite Spot) in Pasadena, California when the idea came to fruition. Sternberger claimed to have been the first to place cheese over a patty inside a bun – a creation he named the Cheese Hamburger. Watch our Food History 101 videos on YouTube here!