When I make these, I make about 100 and freeze them for eating in the winter. To freeze dumplings, place them in a single layer on a flat baking sheet that is heavily sprinkled with flour. Make sure any dough touching another dumpling has a lot of flour on it or they will stick together. Freeze hard. Then you can put them into plastic bags after they are individually frozen. The cooking time is increased slightly. Wait till the dumplings float to the surface of the water, then cook 4 more minutes.