I got headless octopus fresh from the market, aiming to do the plancha method. Knew I couldn't just throw them on so I referenced a book and it said to cook for 40 minutes and then leave them in as the pot cools down. The taste was good, but when I laid them on the grill the skin that has the suction cups came off and with that the drama effect on the table. The tray bake method is something I may try next time, and of course put it in the freezer first (or simply buy already frozen).