Ernsthofer produces wines from Austria's Wachau region, a steep-terraced valley in Niederösterreich known for mineral-driven whites. The winery focuses on Grüner Veltliner and Riesling, the region's signature varieties. Its Weitenberg Grüner Veltliner and Smaragd Riesling demonstrate the precision and structure characteristic of Wachau viticulture, where schist and loess soils impart distinctive salinity and depth. The Ried Steinriegl Smaragd Grüner Veltliner, sourced from a named vineyard site, reflects the Austrian classification system that denotes top-tier dry whites. Falstaff has rated these wines.