A hard cheese made with cow and goat's milk, with a flavour half way between Parmesan and Gruyère. It is made in Sondrio in the Valtellina valley in Lombardy. The curds of this rather bland cheese are cooked. It may be found weighing 15-25 kg (23-52 lb) and is made in two styles, one eaten after six months, the other more likely to be used for grating from one to three years. One source says there is a soft version with an affinage of only 40 days. It is increasingly rare. (PDO).