The idea of octopus for many people is unappetizing and for others just the perfect food. Cooking octopus is as important as the preparation, washing it with salt before a quick submersion into boiling water.

https://mesubim.com/2014/12/22/oktopus-part-2-videos-wash-me-massage/

Here you see it is perfectly cooked, leaving behind a gelatine and a soft outer surface.

https://mesubim.com/2014/12/22/oktopus-part-4-videos-dipping-slowly/