Clairette de Die is an appellation for Sparkling white wines from the area around the town of Die. It is located in the lower alpine foothills of the Eastern Rhône region of France. The wine is made by the traditional method (as in Champagne) entirely from Clairette grapes. It is generally marketed as Brut.
In contrast, Clairette de Die Tradition (aka Méthode Dioise Ancestrale) is not made using the traditional method. Instead, the partially fermented wine is bottled after one to two months to complete the Fermentation in the bottle. The wines only reach 7-9% and are quite Sweet and Fruity. There is often confusion between these two styles, both by consumers and wine professionals.