Similar to the Big King,
Burger King's trademark Whopper gets the mushroom and Swiss treatment for the
new Mushroom & Swiss Bacon Whopper.
Along with the standard quarter-pound of flame-grilled beef, iceberg lettuce, and mayo (they've taken out the ketchup) on a toasted sesame seed bun, they've added thick-cut, hardwood-smoked bacon, Swiss cheese, and sauteed mushrooms.