Tools: Pot, basin, purified water, dry sea cucumber, scissors, ice cubes, plastic wrap, refrigerator.

1, put the dry sea cucumber bought home into a water-free and oil-free basin, add a proper amount of purified water, gently scrub and clean the floating ash on the surface of the sea cucumber.

2. Put the sea cucumber in the basin, add appropriate amount of purified water, and the water should not exceed the height of sea cucumber 10 cm, and then put the basin in the fresh-keeping layer of the refrigerator. The first soaking takes 2 days and 2 nights, during which the water needs to be changed 4 times and every 8- 12 hours.

3. After 2 days and 2 nights of soaking, the sea cucumber will grow to 2.5-3 times the size of dry sea cucumber. Next, let's deal with the sea cucumber again, and cut it up and down along the small mouth on the stomach of the sea cucumber. At one end of the sea cucumber, there is a protruding part, which is white inside. This is the sand mouth of the sea cucumber. It needs to be removed and washed with pure water.

4. After cutting the sea cucumber, you can see that there are white ribs in the belly of the sea cucumber. You need to cut this white rib into three sections with scissors, which is beneficial to the soaking of the sea cucumber.

5. Take a water-free and oil-free cauldron with good thermal insulation, put the sea cucumber into the cauldron, then add enough purified water until the water is less than sea cucumber 10 cm, cover the lid, boil over high fire, then turn to low heat for 30-40 minutes to cook the sea cucumber.

6. Put the cooled sea cucumber into a pot, add enough purified water, and continue to soak for 2 days and 2 nights, during which the water is changed 4 times and every 8- 12 hours.

7. After 4 days and 4 nights of low-temperature soaking, I changed purified water for 8 times, and the sea cucumber has been soaked to 3 times the original size.

8. Finally, wrap the soaked sea cucumbers individually with plastic wrap and store them in the refrigerator.