Which fast food chain is known for its 'Whopper' burger?

Which fast food chain is known for its 'Whopper' burger? Burger King.

Which fast food chain is known for its “Whopper” burger? Burger King. The Whopper is the chain’s signature hamburger and one of the most recognizable branded menu items in the fast-food industry.

Burger King co-founder James McLamore created the Whopper in 1957 after noticing that a rival restaurant was attracting customers with a larger hamburger. He believed size was a major part of the appeal and named his new sandwich “Whopper” to suggest something unusually large. It originally sold for 37 U.S. cents and was first served on a plain bun.

The standard Whopper is built around a flame-grilled beef patty, sesame-seed bun, mayonnaise, lettuce, tomato, pickles, ketchup, and sliced onion, though ingredients and versions vary by market. The Whopper Jr. is its smaller counterpart. McDonald’s and Wendy’s have sold competing large burgers, but neither owns the Whopper name; it is specifically associated with Burger King.