Lanxangia tsao-ko, formerly Amomum tsao-ko, and also known as black cardamom, is a ginger-like plant known in English by the transliterated Chinese name (Chinese: 草果; pinyin: cǎoguǒ; Jyutping: cou 2 gwo 2; Pe̍h-ōe-jī: chháu-kó). It grows at high altitudes in Yunnan, [2] as well as the northern highlands of Vietnam. [3]