Cassava << kuh SAH vuh >> is a type of small shrub with thick roots that are eaten like potatoes or used to make tapioca. The cassava is native to South America. It is grown in the southern part of the United States and in other warm areas. Cassava is also called manioc, mandioca, and yuca.
Cassava roots are an important food in wet, tropical lowlands where potatoes cannot be grown. The roots may be left in the ground as a food reserve. There are two main varieties of cassava: bitter and sweet. Bitter cassava may be poisonous and must be washed and cooked before it is eaten. Cassava is an important source of starch but contains little protein. Unless the roots are eaten as part of a balanced diet, malnutrition may occur.