1, soaking sea cucumber: Rinse sea cucumber with water, put it in an oil-free container, seal the container after pouring water, put it in the refrigerator for 48 hours, and change the water once in the middle.

2. Wash the sea cucumber: remove the viscera, cut the sea cucumber, remove impurities and wash it, leave the viscera and cut it into small pieces, and then wash it again.

3. Boil the sea cucumber: put the sea cucumber in an oil-free pot, add purified water until the sea cucumber does not pass, boil over high fire, simmer for 20 minutes, simmer for 30 minutes, simmer for 20 minutes, and simmer for 25 minutes. When it is in the state of "chopsticks in the middle, both ends naturally bend", it can be taken out, and the uncooked sea cucumber should continue to stew. Soak the sea cucumber again: put the cooked sea cucumber into a clean oil-free container, pour enough water, seal it and refrigerate it in the refrigerator. Soak the smaller sea cucumber for 24 hours, and then continue to change the water for 24 hours.