1. Peel the sweet potato, wash and cut into pieces. Mix flour with water and proper amount of salt, and stir well to make a paste. It should be thicker, so that the sweet potato slices can be better stained.

2. Put the sliced sweet potato into the powder liquid and wrap it in the powder slurry. When pouring into the oil pan, use oil, turn on low heat and cook slowly until the oil temperature is 80% hot, and then add sweet potato chips.

3. Don't put too many sweet potato slices at a time. Put them into the pot one by one, then put them qualitatively. Stir them when you put them down. After 10 second, stir them and put other sweet potato slices on the other side for frying.

4, the whole process should be slowly fried with a small fire. After frying, the sweet potato slices just out of the pot have a pleasant aroma and a golden and translucent color.