1. Peel and steam the potatoes, put them in a fresh-keeping bag and press them into puree.
2. Wash and drain the leeks.
3. Chop the sandwich meat into minced meat, add salt, cooking wine, light soy sauce, and oyster sauce, mix well.
4. Finely chop the leeks and add the mashed potatoes to the meat.
5. Mix well into filling.
6. Make dumplings.
7. Bring water to a boil in a pot, add a little salt, put the dumplings in the water and boil, tap cold water twice to cook.
8. Take out the dipping sauce for better flavor.
