The time to steam frozen dumplings is around 10 to 12 minutes. The exact time will be affected by the size of the dumplings and how frozen they are. Before steaming, heat the steamer until the water boils, then arrange the frozen dumplings on the steamer drawer, taking care to space the dumplings apart. Cover the pot and start the timer. When the time reaches 10 minutes, you can open the lid to check if the dumplings are cooked through. If the skin becomes transparent and the filling is cooked, you can take them out and enjoy. Remember to be careful with the hot hands and pay attention to safety.