No. White frost is the crystallization of sugar after drying in the sun. White frost is in the form of granules or powder, just like white sugar or powdered sugar. If it is moldy, it will have long hairs, some white or green. The hairs are very similar to freshly made marshmallows on the street, and you can smell something rotten.

The drying process of sweet potatoes should not be too long, but it should not be too short either. It should be dried for about one and a half months after being cooked and sliced. The sugar content is sufficient. The appearance of sweet potatoes is not good-looking. It has too much sugar coloring added, which makes it look bad but not tasty. If dried sweet potatoes undergo a temperature difference between hot and cold, sugar crystallization will easily occur on the surface, forming white frosting, just like persimmons.

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Notes:

When eating dried sweet potatoes in life, do not eat dried sweet potatoes with persimmons, because dried sweet potatoes It is incompatible with persimmons. If eaten together, it will be very harmful to the health of the human gastrointestinal tract. Dried sweet potatoes and persimmons should not be eaten at the same time in a short period of time. If you eat a lot, they should be eaten at least five hours apart.

If eaten at the same time, the sugar in the dried sweet potatoes will ferment in the stomach, which will increase gastric acid secretion and react with the tannins and pectin in the persimmons to cause precipitation and agglomeration, resulting in hard lumps. In severe cases, it can cause Gastrointestinal bleeding or gastric ulcers. If you feel stomach discomfort, be sure to go to the hospital for a gastroscopy to see if there is gastric bleeding or gastric ulcers.

Baidu Encyclopedia-Dried Sweet Potato