The Keenan Capstone is a structured red Bordeaux blend from Robert Keenan Winery, sourced from estate vineyards in the Spring Mountain District of Napa Valley, California. The blend is composed of 65% Cabernet Sauvignon and 35% Merlot, reflecting the winery's longstanding commitment to mountain-grown, Bordeaux-inspired wines.

On the nose, the wine delivers rich aromas of blackberry, cassis, earthy tobacco, pencil shavings, and subtle spice. The palate is bold and medium-to-full-bodied with firm tannins, moderate acidity, and flavors that mirror the nose with an added note of black pepper and graphite. The finish is medium-length and satisfying. Community reviewers on CellarTracker award this wine an average of 90+ points, and professional reviews from Decanter, Vinous, and James Suckling have praised its complexity and balance.

The Capstone drinks with an old-world sensibility reminiscent of a young left bank Bordeaux rather than a typical Napa Cabernet. Decanting for 60 minutes is recommended to open up the wine's full character. It can be enjoyed now or cellared for 3–5 more years of additional development.