1, the whole operation must be oil-free: except for the oil in the container and pot, girls should not apply hand cream on their hands. First of all, we wash the sea cucumber under tap water to remove the floating dust on the surface. Never rub the surface of sea cucumber with your hands, let alone touch the thorns on it.

2. Find an oil-free and clean sealed box, put the sea cucumber in the sealed box, and keep the pure water from crossing the surface of the sea cucumber. Soak in the freezer for 24 hours. Don't forget to change water in the middle.

After 24 hours of foaming, the surface of sea cucumber has softened a little. Cut the sea cucumber from the abdomen with scissors. After opening, we need to clean the sea cucumber tendons, just remove the teeth at the top of the sea cucumber and rinse them with pure water.

4. Add purified water to the oil-free pan, bring to a boil, add sea cucumber, bring to a boil, and cook for 20-40 minutes with medium fire until the sea cucumber can be gently kneaded.

5. Put the cooked sea cucumber in a sealed box, let it stand and cool, and then pour in pure water, which is still the water without sea cucumber. Then continue to soak in the refrigerator for 48 hours. In these 48 hours, we need to change the water 2-3 times.