the frozen cake can be steamed directly.

steaming method:

directly boil a pot of water, put a steamer on it, put a layer of gauze on the bottom, steam for about four to five minutes on medium and small fire to freeze the frozen cake first, and then steam for about 15 minutes on high fire. Generally, it is best not to steam things like cakes for more than half an hour, otherwise the cakes will stick together because of too much water.