Mader produces Riesling from Alsace, the northeastern French region celebrated for aromatic white wines of precision and mineral depth. The winery's portfolio centers on this noble variety across distinct terroirs. The Riesling Alsace Grand Cru 'Rosacker' represents the upper tier, drawn from one of Alsace's classified vineyard sites. The Muhlforst Riesling and Lieu-dit Haguenau Riesling round out the core range, each expressing the character of its specific plot. Alsatian Riesling typically balances floral aromatics with crisp acidity and stone-fruit notes, and these wines have been assessed by Wine Spectator, Wine Enthusiast, Wine Advocate, and Decanter.