2. Wash and peel the sweet potato and cut it into thin slices with a paring knife.

3. Pad the baking tray with tin foil or oiled paper, and put the sweet potato slices flat.

4. If you are not afraid of being fat, you can brush some coconut oil to increase the flavor, and other vegetable oils can also be used.

5, sweet potato chip oven 140- 150 degrees, hot air mode is better. After baking for 20 minutes, turn over and continue baking 15-20 minutes.