The shell of razor clam cannot be eaten. Although the shell of razor clam is composed of chitin, protein and minerals, its structure is different and it can't be eaten.
When dealing with razor clam, the black viscera inside must be squeezed clean. The viscera of SINONOVACULA constricta contains heavy metals, sand, excrement and so on. You can cut the intestinal gland of the shelled razor clam with a knife, remove the sand and black edges inside, and finally rinse it with water. If the razor clam is directly heated or fried without shelling, then the black part can be directly picked out when eating.
Cleaning method of razor clam:
1, put the razor clam in light salt water and let it stand for about 20 ~ 30 minutes, and you will see that the razor clam begins to spit water desperately. After about 2 ~ 3 hours, the sediment in the razor clam will be spit out.
2. Take out the razor clam that spits out all the sediment, rub it with light salt water several times to wash the dirt off the shell.
3. Blanch the razor clam in a boiling water pot, take out the razor clam meat, tear off the black line on it, remove the black "sandbag", squeeze the straw of the razor clam by hand, squeeze out the dirty things inside, and then rinse it with clear water.