Gessinger produces Riesling from the Mosel, Germany's most celebrated cool-climate region. The winery focuses on the Zeltinger Sonnenuhr vineyard, a south-facing slope whose name—German for "sun dial"—reflects its sun-trapping geometry and the precision required to harvest at optimal ripeness. The flagship Zeltinger Sonnenuhr Riesling Auslese demonstrates the region's signature balance: bright acidity, mineral tension, and the honeyed richness that emerges when noble rot concentrates fruit in late-harvest conditions. A second expression, the Spätlese Josefsberg Old Vines, draws from mature plantings to express deeper structure and complexity. The Caldo Infernale Zeltinger Sonnenuhr Riesling Auslese Alte Reben, made from old vines, adds another layer to the portfolio. These wines have been assessed by Wine Enthusiast, Wine Spectator, Falstaff, and Wine Advocate, reflecting their standing within serious wine criticism. Mosel Rieslings of this caliber—particularly in the Auslese and Spätlese categories—are prized for their ability to age, their aromatic intensity, and their capacity to express terroir through the lens of a single, noble variety.