The air fryer can roast sweet potatoes. The main steps are as follows:

1. Select slender and plump sweet potatoes, wash off the dirt on their surfaces, and then put them into the pot.

2. Adjust the temperature of the air fryer to 200 degrees and set the time to 20 minutes.

3. After 20 minutes, flip the sweet potatoes and bake for another 20 minutes.

4. Then adjust the temperature to 160 degrees and bake for 10 minutes, until the surface is slightly browned.