Dr. Wehrheim operates in the Pfalz, Germany's warmest wine region, where continental conditions and diverse soils support both white and red varieties at high ripeness levels. The winery's top expressions reflect this terroir: Mandelberg GG, a Weissburgunder that captures the region's capacity for rich, mineral whites; Kastanienbusch Köppel GG, a Spätburgunder showing the darker fruit and structure Pfalz reds can achieve; and Kastanienbusch GG Riesling, which demonstrates the versatility of Germany's signature variety across the region's vineyard sites. These Großes Gewächs designations—Germany's classification for dry, site-specific wines—have been assessed by Falstaff, Wine Advocate, Decanter, Wine Spectator, and Wine Enthusiast. The winery's focus on Weissburgunder, Spätburgunder, and Riesling aligns with Pfalz's reputation for wines of depth and aging potential, whether in the crisp white or structured red idiom.