Burger King Goes Vegan / Burger King Impossible Burger Review. The Burger King Impossible Whopper has arrived. Burger King is serving the Impossible Burger and my friend Treves joins me today for this Burger King Impossible Burger taste test. Burger King is the latest fast food location that has decided to incorporate a vegan burger on their menu and is offering the Impossible Burger to customers. Burger King is know for their Whopper, so it's great to see the Burger King Impossible Whopper on their menu. The Impossible Burger is made entirely from plants. Treves is a meat eater and this is his first time trying the Burger King Impossible Burger in this vegan burger taste test. I hope you enjoy this Burger King Impossible Burger Review video as Burger King goes vegan!