Roncal - Farmhouse, unpasteurized, hard cheese made from sheep's milk. Wheel-shaped cheese with hard, natural rind covered with velvety-smooth layer of blue-gray mould. Aged for at least 4 months. Firm, elastic interior is slightly grainy, with small irregular holes. Greenish surface is occasionally covered in olive oil. Flavor owes much to richness of the milk. Sweet, herbaceous flavor, thanks to natural pastures of wild grasses, herbs and flowers. As it ages it becomes increasingly tangy.