The day before buying razor clams, pick up a lot of clean water in a vat and let it stand for one night. Then the razor clam you bought is cultured in clean water that has stood for one night the next day. Put some sea salt in the water according to the ratio of 0.5%, and then change the clean water every two hours to ensure the oxygen content in the water.

Fresh razor clam is not easy to preserve, and it is easy to deteriorate after death. You can cook the razor clam with boiling water, and then take out the meat, so that the razor clam is not easy to deteriorate and can prolong some shelf life.