1, eat oysters to remove the viscera part, that is, the green part of the stomach, oysters viscera rich in heavy metals and other pollutants. Live oysters after buying home is recommended to be placed in salt water for two to three hours, to facilitate the oysters to spit out the mud and sand in the stomach. Under normal circumstances, live oysters are slightly open after cooking, if the oyster's shell is tightly closed, it is a dead oyster.

2, in the market to buy oysters, the shell is clean, basically do not need to clean, but the freshness is not guaranteed.

3, people in coastal cities, like to buy oysters directly from the pier, in the purchase, to choose a large fat, yellowish color, individual oysters. This kind of oyster shells need to be cleaned, oysters should pay attention to good protection when dealing with oysters, because oyster shells are very sharp.

4, in general, live oysters after leaving the water is very difficult to survive for a long time, and once dead, it will be in a short period of time to breed a lot of bacteria. If you are only eating for a short period of time, as long as you can keep the oysters moist, for example, by directly covering their surface with a damp cloth. For long term storage, it is recommended to keep them in the freezer layer, but the texture and flavor of consumption will deteriorate.