Knappstein produces wines from South Australia that have attracted assessment from major critics including Wine Advocate, Wine Spectator, Wine Enthusiast, and Decanter. The winery's portfolio centers on Riesling and Shiraz. The Mayor's Vineyard Shiraz represents the upper range of the winery's output, while two distinct Rieslings—the Ackland Vineyard Watervale and the Enterprise Vineyard Clare—showcase the variety's expression across the region's terroirs. Riesling, with its mineral precision and aromatic intensity, finds particular voice in South Australia's cooler pockets, where the variety develops complexity and aging potential. Shiraz from the same region tends toward dark fruit and spice, with structure that rewards cellaring. Knappstein's focus on single-vineyard designations suggests a commitment to site-specific character rather than blended consistency.