Rinse dry sea cucumber slightly, put it in an oil-free and clean container, pour enough purified water and start to foam.

Soak for more than 24 hours, and change the water once every 6-8 hours, until the sea cucumber swells, and it is no longer hard and elastic when pinched, and can be bent at a large angle.

2. Go to the mouth and break the tendons

Cut the whole abdomen along the small hole at the bottom of the sea cucumber, remove the sand mouth on the head, and cut the white tendons on the inner wall of the sea cucumber into sections.

This will make it bigger, otherwise it will limit the foaming rate, but don't throw it away, because "one flower, two tendons and three rollers", white tendons are also very nutritious parts.

3, boiled with water

Put the cleaned sea cucumber into an oil-free pot with good heat preservation performance (an ordinary pot is ok, but make sure it is oil-free).

Pour enough pure water, the water should not exceed 5- 10 cm of sea cucumber. After boiling over medium heat, turn to low heat and simmer for 30-50 minutes. Stir several times in the process of boiling water to prevent it from sticking to the pot.

4, simmer and cool thoroughly

After cooking and turning off the fire, do not lift the lid and continue to stew until it is naturally cool. The standard of stewing is to hold the sea cucumber in the middle, and the two ends will naturally droop slightly. When you hold the sea cucumber, it will shake slightly, and you can easily pinch through the sea cucumber skin and flesh.

Sea cucumbers that have not been braised thoroughly can be cooked and braised for the second time, and the method is the same as above. This step determines the final taste of sea cucumber.

5, ice blisters

Continue to put the braised sea cucumber into an oil-free container, pour enough pure water and ice cubes, cover it and put it in the refrigerator for refrigeration. It can be eaten in 2-3 days.

Among them, it takes 6-8 hours to change pure water and ice cubes, and the water should not exceed 5- 10 cm of sea cucumber. The purpose of ice blisters is to make sea cucumbers swell better. Sea cucumbers shrink and swell cold, and their taste will be better.

6. Frozen storage

If you don't eat the prepared sea cucumber for the time being, wrap it tightly with plastic wrap and put it in the refrigerator for frozen preservation. It can be thawed naturally at room temperature before eating.