Nastl produces wines from Kamptal, a steep-terraced valley in Niederösterreich known for mineral-driven whites and structured reds. The winery's portfolio centers on Austria's signature varieties: Grüner Veltliner, Riesling, and Zweigelt. The Grüner Veltliner Kittmannsberg and Zweigelt Gigant both demonstrate the region's capacity for complexity and aging potential, while the Riesling Sekt captures the aromatic intensity and precision that define the area's cool-climate character. Kamptal's slate and loess soils impart distinctive salinity and texture to these wines. Critics including Wine Enthusiast, Wine Advocate, Falstaff, Wine Spectator, and Decanter have assessed the winery's releases.