Wash the octopus very well under cold water.
Bring a pot of water to boil and once the water is boiling, put the octopus in the water.
Let it cook for a few minutes. Once it turns red, remove the octopus from the hot water and rinse it under cold water.
Cut the octopus in pieces of about 1".
Add the EV olive oil and the juice of the lemons.
Add salt and peperoncino to taste. Toss and put in the fridge for about 2 hours.
Garnish with fresh parsley and serve cold.