1, first of all, you need to know whether the shellfish you buy needs salt water or fresh water. If it is salt water, put salt in the water and try it a little salty. If it is fresh water, soak it in tap water.

2. Drain the water in the basin, add salt and white vinegar, put the shellfish into a small sealed basin, and jerk it a few times, so that the shellfish will spit sand soon.

3. Or putting iron products such as a knife or spoon in the water where shellfish are put can also accelerate the shellfish to spit out sand. However, it should be noted that in order to prevent shellfish from sucking back the spit-out sand again, when soaking, shellfish can be placed in a filter basket, and then the filter basket is placed on a basin, so that the filter basket can be kept at a distance of four or five centimeters. In this case, the sediment spit out by shellfish will sink to the bottom of the basin and will not be sucked back.

4. There is also a quick cleaning method: soak Bai Bei in warm water of about 50 degrees, and of course you don't need to buy a thermometer. The judgment standard is that it is hot to the touch, but it doesn't burn your mouth, which is about 50 degrees.

5. When they are immersed in a water temperature of about 50 degrees, Bai Bei will feel the danger. They will absorb more water for their own protection, and they will actively spit sand, which usually takes only 10 minute. However, this method needs to pay special attention to the temperature. If the temperature is too high, it will cook them and it will not fully spit sand.