Burger King’s Black Burger: Fast Food’s Most Shocking Hamburger To Date! [PHOTO]

Burger King's black burgers contain black buns, cheese and sauce, and they will be officially released in the chain's Japan restaurants on Friday, September 19, in a limited-time offer that will only last until early November.

The new Burger King black burgers are part of a new joint campaign between the famous fast food chain and its partner Coca-Cola, particularly with their Coke Zero soda drink. It also celebrates Burger King's 7th return anniversary to Japan.

The Burger King black burger will come in two different presentations: the Kuro Pearl, which will sell at 480 yen ($4.49), only has a patty, black cheese and squid sauce; the Kuro Diamond adds tomato, onion, lettuce and mayonnaise to the mix and will cost 700 yen ($6.49). In Japanese, the word kuro translates to "dark" or "black."

It is not the first time that Burger King's black burgers hit the market in their Japan restaurants, as in 2012 there was a similar Premium Kuro Burger, which only featured black buns (which take their color from bamboo charcoal) and black ketchup; and then, last year, the fast food giant released their Kuro Ninja Burger (that's right, Japan's own ninja burger) which featured a fun addition: a thick tongue-like piece of bacon. The Ninja one's "tongue" stuck out to customers because of the onomatopoeic sound in Japanese for sticking one's tongue out, "beeda", which sounds similar to "bacon."

Burger King's black burgers are just the newest fad to hit Japan's fast food chains; recently, their local KFC restaurants released a new promotional feature that could have customers pick up fried chicken-themed peripherals for their computers, such as: a keyboard that had fried chicken pieces instead of letters as well as little statues of KFC buckets and Colonel Sanders himself; a mouse shaped like a big piece of chicken ... and even an USB memory stick that looks like something that came out of a box! Funnily enough, the consolation prices were chicken-shaped earrings.

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