Once the dumplings are steamed, you'll need to reheat them in the microwave. For the most delicious results, the dumplings should be kept warm. When they are reheated, the leftovers should be covered tightly with plastic wrap and kept in the refrigerator. If possible, keep them in the refrigerator or freeze them separately. They'll keep for a few days in the freezer.
This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition data is gathered primarily from the Spoonacular Database, whenever available, or otherwise other online calculators.