Hirtl produces wines from the Weinviertel, Austria's largest wine region, situated in the Niederösterreich wine country. The winery focuses on Grüner Veltliner, the white grape that defines the region's character—mineral-driven, crisp, and food-friendly. Hirtl's Eiswein Grüner Veltliner demonstrates the variety's capacity for concentration and complexity when affected by noble rot, while the Reserve Grüner Veltliner showcases depth and structure from the same varietal in dry form. The winery also produces Reserve Merlot, extending its range into red wine. Falstaff and Decanter have rated Hirtl's releases, anchoring the winery within Austria's critical discourse.