Scallops should be steamed for about 5 minutes to cook.

This is not necessarily true and depends on the circumstances. For example, the steaming time varies slightly depending on the size of the head and the heat level. In general, scallops in the steamer, pour water in the pot, cover the medium heat steaming until bubbling, and then turn the small fire steaming for about 5-10 minutes, small scallops can be slightly shorter steaming time, smaller 3 minutes or so can be. In short, the steaming time can not be too long, otherwise the taste is not good, of course, can not be short, otherwise the bacteria can not kill.

Shellfish steamed in boiling water or cold water on the pot to steam?

Steaming on the pot after the water boils. Scallops are rich in protein and amino acids, flavor is very tasty, in the steaming time it is recommended to wait for the water to boil before putting on the steam, so that the high temperature can quickly lock the scallop outer layer of moisture, which can make the interior to maintain the tender taste. Otherwise, if the cold water on the pot steaming, it will make the scallops with the water temperature and slowly heating, so not only the scallop meat texture will become old, and fishy flavor will be aggravated, eat up is not very delicious.