2. Add a proper amount of water to the basin, and then completely soak the kelp in it to ensure that every corner is soaked.

3. After soaking for more than ten minutes, the kelp will soften slightly, and then rub it by hand, so that every fold will be opened.

4. Rinse the kneaded kelp with clean water.

5. Soak the washed kelp in a basin until the kelp is scattered.

6, kelp. Laminaria of Laminariaceae. Concentrated in the northwest Pacific Ocean, widely distributed in the coastal waters of Liaodong Peninsula and Shandong Peninsula in China after its introduction. Kelp is brown and flat. It is divided into leaves, stalks and fixators, and the fixators are in the shape of pseudoroots. The leaf is composed of epidermis, cortex and pith, and there are two longitudinal grooves running through the middle of the leaf to form the middle zone. There is a sporangium in the lower part of the leaf, which has a mucus cavity and can secrete slippery substances. The growth of kelp is mainly affected by temperature, light, nutrients and plant hormones.