Persimmon cakes are always covered with white 'frost. ' This isn't mold, it's the glucose and fructose that has evaporated out and crystalized while the fruit dried.

柿饼上总结着一层白霜，这不是发霉，而是柿子晒干燥过程中，葡萄糖和果糖随着水分蒸发析出，凝结成的晶体。