Boesenbergia rotunda, commonly known as Chinese keys, fingerroot, lesser galangal or Chinese ginger, is a medicinal and culinary herb from China and Southeast Asia. In English, the root has traditionally been called fingerroot, because the shape of the rhizome resembles that of fingers growing out of a center piece.
Fingerroot is known as temu kunci in Indonesian. It is widely used in Javanese cuisine in Indonesia.
In Thai cooking it is called krachai and is an ingredient of dishes such as kaeng tai pla. It is used in some kroeung pastes of Cambodian cuisine and is known as k’cheay. In the west it is usually found pickled or frozen. It is sometimes confused with Alpinia officinarum, another plant in the family Zingiberaceae which is also known as lesser galangal. In Manipuri, it is called Yai-macha .