Outpost produces wines from Howell Mountain, the volcanic ridge east of Napa Valley known for intense sunlight and well-drained soils that concentrate fruit and tannin. The winery's True Vineyard Cabernet Sauvignon, a pure expression of the varietal, has earned recognition from Wine Advocate, Decanter, Wine Spectator, and Wine Enthusiast. True Vineyard Immigrant, a Cabernet Sauvignon–led blend with Merlot and Cabernet Franc, shows the winery's approach to structured, age-worthy reds. A Grenache rounds out the portfolio, offering a different expression of the mountain's terroir. The volcanic character of Howell Mountain—its elevation, mineral-rich earth, and diurnal temperature swings—shapes wines built for depth and complexity rather than immediate appeal.