Germany produces around 3.6% of the world's wine, primarily white wines with an alcohol content of 8-9%. German wines are produced along the Rhine and Moselle Rivers in quality categories ranging from QmP, the highest quality wines, to QbA and DT, simpler wines. Key grape varieties include Riesling, Muller-Thurgau, and Gewurztraminer. Major wine regions include the Ahr, Franken, Baden, Nahe, Rheingau, Mosel Saar-Ruwer, and Rheinpflaz valleys. Popular German brand names include Henkell Trocken sparkling wine, Liebfraumilch, and Weissherbst rose