Stewart produces Cabernet Sauvignon from Rutherford, the Napa Valley appellation renowned for structured, age-worthy reds with dark fruit intensity and refined tannin architecture. The winery sources fruit from distinguished vineyard sites: the Nomad Beckstoffer Dr. Crane Vineyard and Max Vineyard both achieve 96.5 average prestige ratings, while the Nomad Beckstoffer Las Piedras Vineyard reaches 94.7. These bottlings have been assessed by Wine Enthusiast, Wine Advocate, Decanter, and Wine Spectator. Rutherford's gravelly soils and warm days tempered by marine influence create conditions that yield Cabernet with both power and elegance—wines that balance ripe black currant and plum with structured acidity and firm tannins. Stewart's focus on single-vineyard expression reflects the terroir specificity that defines serious Rutherford Cabernet.