Roll out the dough between two pieces of baking paper until it is 1-2 millimeters thick.
Cut it into circles with a diameter of 9 cm. Use a bowl or metal form that fits the size.
Place a tablespoon of filling in the center of each dumpling.
Fold the dough up around the meatball, and pinch it tightly at the top.
Cook the dumplings in a bamboo steamer or another steamer insert.
Bring a large pot of water to a boil. Line the bottom of a steamer basket or insert with baking paper, and poke holes in it so the steam can come through.
Place the dumplings on the baking paper – they should not touch each other, otherwise they will stick together.
Put the steamer basket or insert into the pot with the boiling water, and steam the dumplings for 10-12 minutes, or until they are completely cooked through.