What is an old sweet potato?

Sweet potato. The old sweet potato dialect refers to sweet potato, which is also called dried sweet potato. In the south and north of China, it refers to the tuberous roots of two different plants, and in the north, it mainly refers to sweet potato and sweet potato. And parts of the south are different species. Their tubers and tubers are full, crisp and juicy, rich in sugar and protein, and rich in various vitamins. You can eat it raw or fried. Mature tuberous root has high starch content, so starch can be extracted.