To prepare the tripe with beans, place the cannellini beans in a bowl and soak them in cold water for 12 hours (1). After this time, drain, rinse, and cook them in a pot, starting with cold water.

Put the tripe into a saucepan with a quarter cupful of water, with the lid on, place on the hob for 8-10 minutes approx. Discard the liquor in the pot, add the sliced onion and cover with cold milk.