1, oysters need to be soaked in salt water for half an hour. It's best to put half a lemon juice and squeezed lemon peel in salt water, so as to remove sand and smell.

2. The preservation methods of oysters are as follows: (1) Fresh oysters can be washed, and a few drops of sesame oil can be added to the basin for one or two days; (2) Long-term storage requires boiling and freezing in the freezer; (3) Wrap it in plastic wrap and put some salt in the refrigerator.