High Quality Content by WIKIPEDIA articles! Cyperus esculentus (or chufa sedge, nut grass, yellow nutsedge, tigernut sedge, or earth almond) is a crop of the family sedge native to warm temperate to subtropical regions of the Northern Hemisphere. It can be found wild, as a weed or as a crop. It has been cultivated since the fourth millenium bc in Egypt, and for several centuries in Southern Europe. Nowadays it is often cultivated for its edible tubers (tigernuts), mainly in Spain for the preparation of the milky beverage Horchata de chufa. But in many countries C. esculentus is considered a weed and it is underutilized.