Crush the galletti or the bread in a food processor to make breadcrumbs. Mix in the vinegar (or water) and let them sit while you prepare the other ingredients.
In a food processor add all the other ingredients except the olive oil. Pulse until everything is finely chopped and almost paste like.
Add the soaked galletti or bread together with the olive oil to the mixture. Blend together until a paste forms. Add more oil if the consistency is too thick.
Serve with more galletti or bread on the side, fresh vegetables and snails.