Dirty Girl These firm cheeses belong to a category called "washed curd." It is also a renneted cheese, as distinct from a lactic cheese, so the cheeses are made all in one day, though their aging ("affinage") takes months. Gouda is a more familiar cheese in the washed curd category. Unlike most goudas, Dirty Girl has a natural rind. Dirty Girl is aged 4+ months, and has a firm paste, and a mild but complex flavor which many folks are surprised to associate with a goat cheese. It is extremely versatile.