A spatula is disclosed that is used to implement a food preparation method having the object of forming a roll of ice-cream, in which a quantity of food product in liquid or creamy state, consisting of a basic preparation for ice-cream, is spread on a controlled cooling plane at a temperature of about −18° C., to form in a few seconds a layer of ice-cream, changed into solid or pasty state, which is subsequently scraped away by the spatula, the latter having an upper side from which a protrusion emerges that, during scraping, meets the scraped-away ice-cream and deflects the ice-cream, promoting the rolling up thereof.