Konjac ( ; Amorphophallus konjac; syn. "A. rivieri"; Japanese: 蒟蒻/菎蒻; こんにゃく; konnyaku; ; gonyak; ), also known as konjak, konjaku, konnyaku potato, devil's tongue, voodoo lily, snake palm, or elephant yam (though this name is also used for "A. paeoniifolius"), is a plant of the genus "Amorphophallus". 