O'Shaughnessy Estate Winery, founded by Betty O'Shaughnessy in 1990, is renowned for producing exceptional mountain-grown Cabernet Sauvignon in Napa Valley. With vineyards on Howell Mountain and Mount Veeder, the estate focuses on high-elevation terroir. The Mount Veeder Cabernet Sauvignon is sourced from steep, rugged vineyards that yield tiny, concentrated berries. The resulting wine is intensely structured, featuring deep black fruit, mountain herbs, and firm tannins, requiring time to unfold but offering incredible longevity and complexity.