1. Chop pork belly, onion ginger and yam for later use; Note: it cannot be broken by machine, otherwise it will have no taste. Yam can be broken with a knife.

2. Boil the vermicelli in a pot until soft, remove it immediately, drain off excess water and chop it; Note: You can't put ice in cold water.

3. Put the processed ingredients together, add eggs, salt and white pepper, mix well, then add sweet potato powder and mix well until the white meatballs can stand and not collapse.

4. Squeeze out the pills by hand, dip a little sweet potato powder into the pills until they are round, and put them on the panel to wait for the pot.

5. When the white meatballs are ready, cook them in boiling water. The steps are similar to those of cooking jiaozi.

6. Remove the boiled white meatballs with a colander and put them in cold water to cool.

7. When the white meatballs are cold, taste them very tight and elastic, indicating that you have succeeded.