The first step is to buy octopus from the market and rinse it with plenty of water.
Step 2: After washing, put it in a big basin, add a proper amount of water, salt and vinegar, and rub it constantly until the mucus of octopus is cleaned.
Step three, clean the octopus. Remove all the eyes, teeth and internal organs of octopus, and clean the ink of octopus. This cleaning process is relatively long.
Step 4: Tear off the black "coat" of octopus from head to bottom. This is the most fishy part, so it must be cleaned.
Fifth, finally, wash it repeatedly, and the washed water will not be turbid, which means it is clean.