Nope. Slices of black cheese.
Above, a Burger King employee holds two black hamburgers at a company restaurant on September 18, 2014 in Tokyo, Japan. The black burgers, one a Kuro Pearl, left, at 480 yen, has black buns and cheese smoked with bamboo charcoal and black sauce made of squid ink. The other, the Kuro Diamond, at 690 yen, comes also with lettuce, tomato, onion and mayonnaise. The burgers are available from September 19 through early November in Burger King restaurants throughout Japan.