In Germany common name for a partially fermented grape, There are two interpretations of the name Federweißer. The most common is that it derives from the yeasty-cloudy, matte-white color. But in the German dictionary of the brothers Grimm one finds the following entry: Federweisser; young, still fermenting milky-cloudy wine (from the old name Federweiß for "alum", because formerly the wine alum as a preservative admitted) . Only in the 1990s was in the growing areas Ahr. palatinate and Rheinhessen a feather-red from above all Blue Portuguese. Frühburgunder and Dornfelder popular.
Depending on the stage of fermentation, there are numerous names, which are usually not regulated by wine law. These include Bitzler (Pfalz), Brauser, Brake, Fiederwäissen (Luxembourg), Prickler, Rauscher, Sauser, Storm (only in Austria) and Suser. See also in this regard must and grape, Complete listings of the numerous vinification measures and cellar techniques, as well as the wine-regulated wine, sparkling wine and distillate types are under the keyword winemaking contain. Comprehensive information on wine law is available under the keyword wine law,