Oysters will not open their shells automatically and need to be pried open with an oyster knife. The method is as follows:

Tools required: water, knife

1. First, put the oysters in Spit out sand into the basin, and change the water frequently depending on the turbidity of the water.

2. When the oyster spits out all the sand, it will begin to open its mouth slightly. At this time, insert a knife against one side and gently pry it open, as shown in the picture below:

3. It needs to be close to the upper shell when inserting, and be careful not to break the oyster meat when prying it open.

4. Then leave half of the shell and rinse it in clean water again.