Reason:
Steam fish, first boil the water in the pot, and then steam the fish, do not use cold water to steam. Because the fish in a sudden encounter with high temperature, the external tissue coagulation, can lock the internal fresh juice, so that the steamed fish meat tender not old, taste more fresh.
Before steaming, it is best to sprinkle some chicken oil or lard on the fish, which can make the fish more tender. You can also seal the plastic wrap to prevent the freshness of the fish from running off or dripping the steamer water to dilute the flavor of the fish.