If the sucker is cleaned, the squid will look smooth and its eyesight will be much better after cooking. You can add baking soda to the water, then put the squid whiskers in and rub them while soaking.
Fresh squid cannot be eaten. Some fresh squid will have a slightly darker skin. Although you can eat it, it is still recommended not to eat it. This kind of skin will not rot for a long time, but the squid can be torn in vinegar 10 minutes without affecting the taste. It can also be sterilized.
Seafood offal is inedible, and squid offal is the dirtiest place in the whole place. Squid not only can't eat internal organs, but also can't eat sliced teeth. When dealing with squid, you must not miss it.