The process of making dried sea cucumbers with swollen skin and ready-to-eat sea cucumbers: 1. Soak the dried sea cucumbers in clean water for 20-30 hours, rinse to remove salt, and clean the internal organs. 2. Boil both sides in boiling water for 15-20 minutes each time. After each cooking time, remove and put into cold water to cool down thoroughly. 3. Boil the sea cucumber (use warm water for the glutinous and crispy type, cold water for the crispy type), add ice water, then add the cooked sea cucumber, and then add ice cubes according to the ratio of ice to water 2:1, ( You can also put it directly in the refrigerator without adding ice cubes) and soak it for 2-3 days. Check out the sea cucumbers that have risen. The sea cucumbers that have not risen will continue to rise until they are well-frozen.