Oysters generally do not need to be allowed to spit sediment. When cleaning oysters, it is best to wear latex gloves, put the oysters into the water, and use a brush to scrub the sediment attached to the oyster shells. Then, pour off the water, add some flour and toss it with the oysters, aiming to get the flour to soak up the oyster's slime.
Next, rinse the flour off with water, add some salt and rinse a few more times. If the oysters indicate that there is still stickiness, it means that they have not been washed well enough, so you can repeat the above steps and rinse them a few more times.
How to wash fresh oyster meat:
If you buy fresh oyster meat, it is often mixed with broken oyster shells or other impurities, as long as you drop the right amount of vegetable oil (peanut oil) into it, it will be easier to clean.
The black stuff in the oyster meat is the oyster's viscera mass, which should have a small amount of feces in it, but when eating it, most people don't remove this part, so if you are very concerned about it, you can also remove it and eat it.
How to clean dried oysters:
First, put the dried oysters in hot water with baking soda dissolved in it to soak, soaking soft is not only easy to wash, but also can remove the odor of dried oysters, rinse it with water after washing it will be fine.