One, oysters offal can not eat, oysters offal mass easy to hide heavy metals and other pollutants, it is a piece of green stuff in the stomach, which is oysters eaten food, unhygienic, can not eat this part.

Two, the shell of the oyster is very hard, can not eat.

Three, oysters inside the black can not eat. Black inside the oyster is oyster metabolites and sediment. It is recommended that before eating the oysters in salt water for 1-2 hours, as far as possible to metabolize all the sediment. When you pour out the brine, there will be a lot of black stuff and sediment inside.

Oysters, also known as oysters (ostrea gigas tnunb) commonly known as sea oysters, oysters, etc., belonging to the phylum Mollusca, Bivalvia, pearl oyster order, is the world's first large farmed shellfish, one of the important marine biological resources available to mankind, for the global distribution of species.

Oysters are suitable for cultivation in subtropical and tropical coasts, and they are most famous in France. In our country, oysters are widely distributed, from the Yalu River in the north to Hainan Island in the south, all the coasts can produce oysters, and the oysters produced at the junction of salty and fresh water are especially fat. Oyster meat is tender, freshness is prominent, with fishy, unique flavor. Can blanch soup, brine, burn, soft fried, can also be made into cans, can also be processed into oysters or oyster dry, oyster oil.