Galangal (galanga, blue ginger, laos) is a rhizome of plants in the ginger family Zingiberaceae, with culinary and medicinal uses originating in Indonesia. (Lao: ຂ່າ "kha"; Thai: ข่า "kha"; Malay: lengkuas (Alpinia galanga); traditional Mandarin: 南薑 or 高良薑; simplified Mandarin: 南姜 or 高良姜; Cantonese: lam keong, 藍薑; Vietnamese: riềng) [For each previous language's note, IPA please?].
The rhizomes are used in various Asian cuisines (for example in Thai and Lao tom yum and tom kha gai soups, Vietnamese Huế cuisine (tre) and throughout Indonesian cuisine, for example, in soto). Though it is related to and resembles ginger, there is little similarity in taste.