Soak kelp before cooking. If you want to eat it the next day, you can soak the kelp in rice washing water the night before (if you don't have rice washing water on hand, you can also add a little salt or dried starch to the kelp soaked water). The purpose of doing this is to make kelp taste better.

After the kelp is soaked, clean it, wash off the impurities on it, and then cook the kelp. When cooking kelp, it is best to put it in a pot with cold water (so that the cooked kelp is not fishy and has no smell), and then add a little vinegar to the boiled kelp water. After the water is boiled, boil it with high fire for 10 minutes, and the kelp will soon boil.

The purpose of adding vinegar is not only to make kelp boil quickly, but also to make the nutrients in kelp better absorbed by the human body when eating.