1, first of all, the octopus will be cleaned with water, see the picture below.

2, the following and then in a small bowl pour the right amount of warm water, see the picture below.

3, the next and then add the appropriate amount of vinegar and salt in a small bowl, see below.

4, the following rubbing to clean the mucus on the octopus, see the picture below.

5, the next use of scissors to cut the head of the octopus, see below.

6, and then the octopus eyes and guts out on it, see the picture below.

7, the last octopus is dealt with, see the picture below.