A popular new Japanese beer is putting an interesting spin on the phrase, "bottoms up."

According to the drinks trade magazine The Drinks Business, Un, Kono Kuro was an instant sellout online for the Sankt Gallen brewery, prompting it to offer the "chocolate stout" on tap at its Tokyo store at Yokogi Park.

But despite its billing, there is no actual chocolate in the beer; the coffee beens used to make it were taken from elephant excrement, as part of a partnership with the Golden Triangle Elephant Foundation, an organization that provides street rescues for stray elephants.

But the name itself is accurate, according to a review of the beer by pop-culture blog RocketNews24, which notes that the name has two meanings: "Yeah, This Is Black" or "Shit Black."

The reviewer, Mr. Sato, also had kind words following a taste test.

"Usually people talk about aftertaste when drinking beer but with Un, Kono Kuro the word afterglow is much more appropriate," he said. "After downing the last drop, slowly rising from my throat and mouth was that afterglow. The combination of bitter and sweet stayed fresh and lingered in my head. It was a familiar aroma that accompanied me through the entire beer."

Watch RT's look at the beer, aired Friday, below.

["Woman with a beer mug" via Shutterstock]