Frozen cooked crabs in the refrigerator, whether hairy crabs or swimming crabs, need to be thawed before they can be eaten, which usually takes about 15 minutes. Because although the crab is ready, it is frozen in the refrigerator before eating. If it is not steamed, it is possible that this food will produce some toxins, which will bring discomfort to the body and stomach. Therefore, the frozen cooked crabs taken out of the refrigerator must be steamed for about 15 minutes, and they can only be eaten after being completely steamed.