1, wash octopus with plenty of water, after washing, put it in a big basin, add appropriate amount of water, salt and vinegar, and rub it until the mucus of octopus is clean.
2. Remove all the eyes, teeth and internal organs of Octopus, and clean the ink of Octopus.
3. Tear off the black coat of octopus from head to bottom.
4. Wash octopus repeatedly until the washed water is not turbid.