Freeze the octopus in Fresco®, spread well in a pan for an hour to make it soft. Regenerate the octopus in Fresco® for half an hour.
Put the octopus in a covered pan and let it cook for an hour until a fork fits well into the pulp. Keep the water that the octopus will have made. Cool in Fresco®, spread well in a pan for 30 minutes.
Finely chop celery, carrot and onion and fry in a little oil. Add the beans (if of jar before blending, drain well from their liquid vegetation and wash them with care). Dilute with the cooking water of the octopus and cook for about twenty minutes. Blend everything with an immersion blender pass with the mill.