Tools/raw materials: millet microwave oven, sweet potato, paper towel.

1. Wash the sweet potato and don't dry it.

2. Wrap it in a tissue.

3. Wet your hand and pat it on the paper until all the paper is wet.

4. Put it in the microwave oven and heat it for 10 minute until the sweet potato surface becomes soft.

5. Tear off the paper towel and eat.