1. Gradually add enough cold water to glutinous rice flour (kneading the mixture) to make a dough that has the consistency and pliability of wet clay.
2. Pinch off about 1 tablespoon of the dough at a time and roll it between the palms of the hands to make a ball. Place on waxed paper.
3. Bring the ginger soup to a boil. Drop the dough balls in and cook 5 minutes over medium heat. To serve: place several dumplings in each bowl. Ladle the hot soup over.