The sand bean, also known as sweet potato, originates from the tropical Americas and was later introduced to China.It is inexpensive and has a good taste, being refreshing when eaten raw and sweet when cooked.Thus, it is widely favored by the general public and is one of the most common foods in China.Moreover, it has medicinal uses such as detoxifying from alcohol, lowering blood pressure, quenching thirst, and replenishing body fluids.
