Petra Unger works in Kremstal, a region of Niederösterreich known for mineral-driven white wines. The winery focuses on Riesling and Grüner Veltliner, Austria's signature varieties. The Ried Gaisberg 1ÖTW Reserve Riesling and Broll Riesling Reserve showcase the precision and structure that define the region's terroir, while the Grüner Veltliner Oberfeld Alte Reben Reserve draws from older vines to express depth and complexity. These wines have been assessed by Falstaff, Decanter, Wine Advocate, Wine Spectator, and Wine Enthusiast, reflecting their standing among serious critics. Kremstal's cool climate and loess-rich soils produce wines of high acidity and mineral character—qualities evident in Petra Unger's reserve selections.