The Impossible Whopper is 100% Whopper and 0% Beef. Try our new plant-based Whopper topped with melted cheese, juicy tomatoes, fresh cut lettuce, creamy mayonnaise, crunchy pickles, and sliced white onions on a toasted sesame seed bun. (Includes: Regular Ketchup, Regular Mayo, Regular Lettuce, Regular Tomatoes, Regular Onions, Regular Pickles) [Cal: 709]