Teusner operates in the Barossa Valley, South Australia's premier region for bold, fruit-forward reds. The winery's portfolio centers on Shiraz and Mataro—varieties that thrive in Barossa's warm continental climate, developing deep color, ripe tannins, and concentrated dark fruit character. Big Jim Shiraz and Righteous Mataro anchor the range, both achieving 94-point average ratings from prestige critics including Decanter, Wine Advocate, Wine Spectator, and Wine Enthusiast. A sparkling expression of Shiraz rounds out the lineup, offering textural complexity alongside the region's signature power. Teusner's wines reflect Barossa's terroir: dense, structured, and built for both immediate pleasure and cellaring.