Soak the scallops in ½ cup boiling soup stock (or water), about 2-3 hours, then steam another ½ hour. When soft, shred the scallops with fingers. Save the stock. (use in #3).
Cut radish into 30 small balls with a melon ball scoop. Boil in water about 10 minutes, drain and soak in cold water.
Heat 4 tablespoons oil in frying pan, add ginger and scallop