"Fast Food Frenemy: The Forgotten Rival to the Whopper. Burger King's iconic sandwich has been a staple of American fast food for decades, but few know about its lesser-known predecessor. In the 1950s, a rival fast-food chain, Sonic, also offered its own version of the Whopper, a flame-grilled burger that would go on to become a cultural phenomenon. But as the burger wars raged on, only one brand emerged victorious, leaving the other to fade into obscurity. Read on to discover the surprising story of how the Whopper became a fast-food icon and what happened to its forgotten rival."
In the 1950s, both Burger King and Sonic served their own version of the Whopper. But over time, only one survived to become a fast-food icon.
