1. Purple sweet potato peeled
2. Cut well
3. Put it in the pot and cook
4. Cook for 15-20 minutes, add appropriate amount of sugar
5. Mash the purple sweet potato
6. Fill up with a bowl
7. Wrap the purple sweet potato with powder skin
8. Wrap it, put it in a pot and steam for 5-10 minutes
9. And put it on the plate
10. carry out
