How long is the best time to steam crab?

Steaming crab for 15-20 minutes is the best.

Steaming time mainly depends on the size of crab. Generally speaking, less than 3 liang of crab steam for 15 minutes, 3-4 liang of crab need to steam for about 18 minutes, more than 4 liang of crab need to steam for about 20 minutes. This can ensure that crab cooked, kill parasites and bacteria, while maintaining the fresh taste of crab meat.

It should be noted that the steaming time should not be too long, otherwise it will lead to aging crab meat, taste worse. In addition, before steaming crab, should be washed, brush off the surface of sediment and impurities, and add appropriate amount of water in the steamer, so as not to steam dry.