Cassava is a kind of potato, also known as Nanyang yam, is a kind of "imported goods", the appearance looks similar to the ordinary yam, but generally thicker than yam, the skin is more rough.

Cassava is a plant of the genus Cassava in the family Euphorbiaceae, which is drought-resistant and infertile, and is widely grown in more than 100 countries or regions in Africa, the Americas, and Asia, and is one of the three major potato crops.