1, dried sweet potatoes should be placed at room temperature, so that the sugar contained in dried sweet potatoes will penetrate to the surface and form frost. Frost is actually a natural sugar in sweet potatoes. The longer it is left at room temperature, the more frost it will be.

2. Dried sweet potato, also known as dried sweet potato, is a traditional local product of Liancheng County and Shandong Province in Fujian Province. It tastes soft and sweet and is deeply loved by consumers.

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