Gesellmann produces wines in Mittelburgenland, Austria's premier red wine region. The winery focuses on Merlot and Blaufränkisch—indigenous and international varieties that thrive in the region's continental climate and iron-rich soils. Bela Rex, a Merlot and Cabernet Sauvignon blend, represents the winery's approach to structured reds with aging potential. The flagship Merlot and G, a Blaufränkisch and St. Laurent blend, round out a portfolio that emphasizes depth and complexity. Falstaff, Wine Advocate, Decanter, and Wine Spectator have all assessed the winery's releases, reflecting its standing among serious Austrian red producers.