Dried sweet potatoes, also known as dried sweet potatoes and dried groundnuts, are a traditional specialty of Liancheng, Fujian and Shandong, and the raw material is sweet potatoes. Generally, the whole sweet potato is steamed and peeled, then cut and dried naturally. Slices or strips, beneficial to the qi and body fluid and other edible and medicinal functions, by the United Nations as the healthiest food. Here the sweet potato dry exact statement should be french fries, the general situation of the sweet potato dry is to fresh sweet potatoes as raw materials, through the tool cut into thin slices, through the drying into the sun, mainly used for alcohol processing. Sweet potatoes, purple potatoes are red sweet potatoes and purple sweet potatoes for short, red, purple is just a different peel color to show the difference.