Thaw the frozen cabbage first.
It is better to defrost the frozen cabbage first. Blanching the cabbage first will destroy the properties of the cabbage, and freezing the cabbage will accelerate the damage.
Note
1. Frozen cabbage can be blanched in cold water.
2. Eating frozen cabbage can be properly processed, that is, heating the frozen cabbage or the frozen cabbage after it has been warmed before eating to destroy the nitrite. The specific method is to cut the cabbage into small pieces when it is frozen, boil the water in a pot, and then cook the frozen cabbage for about five minutes. Taste while cooking. If it is too hard, it will not taste good, and if it is too soft, it will be rotten. The flavor of frozen cabbage is lost.
Take out the blanched frozen cabbage, cool it with cold water, shape it into a ball, and place it on a plate. When blanching cabbage, be careful not to cover the pot, so that the cabbage leaves won't turn yellow, otherwise they won't look fresh.