reverse steaming of sweet potatoes means that the sweet potatoes steamed once or twice are exposed to the sun and then returned to the steamer to continue steaming. The ancient method of reverse steaming, also known as "three steaming and three drying", is a special production method of dried sweet potatoes. One steaming is ripe, the other steaming is sweet, the third steaming is soft, and the third steaming and the third drying are indispensable. Dried sweet potatoes made by the ancient method of reverse steaming are delicious, sweet and chewy, and the food does not stick to the teeth. After eating, it will have an endless aftertaste.

Reverse steaming of sweet potatoes means that the sweet potatoes steamed once or twice are exposed to the sun and then returned to the steamer to continue steaming. The ancient method of reverse steaming, also known as "three steaming and three drying", is a special production method of dried sweet potatoes. One steaming is ripe, the other steaming is sweet, the third steaming is soft, and the third steaming and the third drying are indispensable. Dried sweet potatoes made by the ancient method of reverse steaming are delicious, sweet and chewy, and the food does not stick to the teeth. After eating, it will have an endless aftertaste.