Choose sweet potato with sugar core, peel it and put it into water immediately to prevent oxidation and discoloration. Steam in the pan for about 40-60 minutes. Steamed sweet potatoes are easy to stick in with toothpicks, and the big ones should be steamed for a while. Put the steamed sweet potatoes on the tray to cool. Small sweet potatoes don't need to be cut, and the big ones are cut into thick slices of 1cm. Spread the sweet potatoes and put them in a net bag for a week.

1, choose sweet potato with sugar core, peel it and put it into water immediately to prevent oxidation and discoloration.

2. Steam on the pot for about 40-60 minutes.

3. Steamed sweet potatoes can be easily pierced with toothpicks, and the big ones should be steamed for a while.

4. Put the steamed sweet potato on the tray to cool.

5. Small sweet potatoes can be cut into thick slices of 1cm without cutting.

6. Spread the sweet potato and put it in a net bag to dry for a week.