Just rinse the persimmon cake with water. Because it is generally impossible to tell which are frosting and which are pollutants, you can only clean up the instructions when washing, so as to wash away more pollutants.

after air drying, the surface of persimmon presents white material as persimmon cream, and the main component is fructose. Because persimmon is dried fruit preserved, it is naturally dried, and the water evaporates, and fructose dissolved in water is precipitated in this process, forming persimmon cream. If the surface of persimmon is not polluted, you can eat it like this without washing, because frost is fructose, which can be eaten, not dust.

Extended information:

Taboos for persimmon:

Because persimmon contains more tannic acid and pectin, when eaten on an empty stomach, they will form lumps with different sizes under the action of gastric acid. If these lumps can't reach the small intestine through pylorus, they will stay in the stomach and form stomach persimmon stones. Small stomach persimmon stones are like apricot kernels at first, but they will accumulate more and more.

Tannic acid in persimmon cake can form compounds that cannot be absorbed by human body with minerals such as calcium, zinc, magnesium and iron in food, so these nutrients cannot be utilized, so eating persimmon cake is easy to lead to the lack of these minerals. Because it contains more sugar, people feel more full when they eat persimmon cakes than when they eat the same amount of apples and pears, which will affect their appetite and reduce the intake of dinner.

Persimmon cakes are high in sugar and pectin. After eating, some of them are always left in the mouth, especially in the teeth. Adding weakly acidic tannic acid can easily erode teeth and form dental caries. Therefore, it is advisable to drink a few mouthfuls of water after eating or rinse your mouth in time.

Baidu Encyclopedia-Persimmon Cake

People's Daily Online-Eating Persimmon is forbidden. Don't eat 13 kinds of food with persimmon