Half Colby and half Monterey Jack, this cheese ranges from mild and mellow to sharp and tangy with a milky flavor. Colby-Jack was invented when two vats of cheese, one Colby and one Monterey Jack, were blended together prior to pressing. The resulting cheese had a beautiful marbled orange and white color with a mildly sweet taste. It's used in soups, sauces, salads, sandwiches and casseroles. Colby-Jack melts well and is the perfect choice for nachos.