Pour enough water into the pot, then put in a grate or basket, be careful not to let the grate or basket touch the bottom of the pot, at least 3cm away from the bottom of the pot. Then pour the mussels on top of the grate or basket, if the amount of water is not enough to completely submerge the mussels, add more, the biggest advantage of putting the grate or basket is that the sediment spat out by the mussels will easily sink to the bottom of the pot, and won't be sucked back by the mussels, so that it will take a short period of time to remove the sediment and the effect is good. In fact, you don't need to put a grate or a basket, but it will take a longer time, the effect of removing sediment is almost the same, and you need to change the water a few times in the middle.

When you buy mussels, you can ask the owner for sea salt, put the sea salt in a pot and stir until it dissolves, and use sea salt water instead of water for better results. After soaking the mussels in the water, you can also put a few drops of cooking oil or sesame oil on the water surface, which will encourage the mussels to gulp more desperately, and the time taken to remove the sediment is shorter and the effect is better, and you can spit out a lot of dirty things in 2 to 3 hours.