Clean the newly bought live oysters, put them in a clean basin, be careful not to add water, cover the basin surface with a wet cloth and put them in the refrigerator for up to a week.

In order to survive for a long time, oysters must have just been caught ashore. This kind of oyster has a bright appearance and a strong sea smell. Oysters have a complete shell, a tight mouth and a stout body. If it needs to be preserved for a long time, it can be cooked in the shell, then the oyster meat is taken out, put into a fresh-keeping bag, and frozen in the freezer.

Matters needing attention in purchasing oysters

When buying oysters, you should pay attention to whether the vitality of oysters is good enough. You can touch the oyster shell when it is slightly open to see if it can close the shell quickly. If so, this oyster will live longer. If you can eat it the next day, clean the oysters, put a layer of water in the basin, don't spill the oysters, and keep them moist, or cover them with a wet cloth and put them in a cool and ventilated place.