Fontina is a mild, nutty-flavored cheese that's been produced in a region of the Italian Alps since the 1300s. Because it melts easily, fontina is often used in cheesy sauces.
There are many different types of fontina, from semi soft to hard, some very mild and others a bit sharper in flavor. They're all made with cow's milk and have a high fat content that gives them a smooth, creamy taste. Young, soft fontina is an ingredient in many cheese fondue recipes. Originally an Italian cheese, fontina is now made in many different countries. Fontina, according to some sources, comes from the Fontin pasture in the Alps' Aosta Valley.