In a saucepan, sauté onion with 10 ml oil, add cooked broccoli cubes, then brown and cover with water. Pour in parsley leaves and blend, then adjust for flavor.
Lay the broccoli florets on a steel tray and season with oil, salt, pepper and the garlic clove, then grill at 200° in oven for 5 minutes.
Boil the cream again and pour the octopus cooking water inside the bag, the remaining oil, whisk again and lay the cream on the plate.