1 The clams bought home must be alive. Add some salt to the water, soak them in the clams, cover them with a plastic bag, poke a few holes, and put them in the fresh-keeping layer in the refrigerator, so that they can be kept for about 2-3 days.

2. Or pack the clams in a nylon net bag, tightly tie the mouth of the bag until there is no gap between the clams, and press it as tightly as possible. Then put it into a foam box, put ice cubes with a thickness of 10-20 cm on it, and cover it with a cover or a transparent film at the thickest.