 Another theory, that comes up often in the literature, is that the traditional shortcrust pastry "Fuatscha Grassa" was crossed with a French nut pastry by confectioners from Graubünden living in France.When they returned to Graubünden, the idea was brought along.A third theory is that during the Middle Ages many confectioners from Graubünden moved to Venice and for 300 years specialized in sweets.