Tortellini is filled which is shaped to look like a girls belly button. Using gowgee skins makes the preparation of tortellini easy, a technique which many restaurants use. You can make ravioli with gowgees skin by simply folding in half or by placing one over the top to seal in the filling, cut out with a fluted biscuit cutter for a frilled edge. There is an endless selection of fillings and sauces that can be used once you know how.