Franzen produces Riesling from the Mosel, Germany's most celebrated white wine region. The winery's flagship wines—Bremmer Calmont Riesling GG and Neefer Frauenberg Riesling GG—showcase the steep-slope terroir that defines this corner of the Rhine valley. Mosel Rieslings are prized for their balance of ripeness and acidity, mineral precision and aromatic intensity. The GG designation (Grosses Gewächs) signals dry, site-specific expressions of the highest caliber. Franzen's top bottlings have been assessed by Wine Advocate, Wine Enthusiast, and Wine Spectator. The Bremmer Calmont Riesling GG and Neefer Frauenberg Riesling GG represent the winery's core expression of Mosel Riesling character—wines built on the region's slate soils and steep vineyard geometry.