Traditionally produced within the Parco delle Orobie Bergamasche Alpine nature reserve in the Brembana Valley, namely the Lombardian province of Bergamo, Formai de Mut is a semi-hard cheese made with raw cow's milk. It is available in two varieties: cheese produced in the valley during winter (Fondovalle), and the one produced during summertime in the lush mountain pastures (d'Alpeggio).