Winemaker Notes
Critical Acclaim
All Vintages
O’Shaughnessy Estate Winery sits at 1,800 feet on the heralded Howell Mountain appellation in the beautiful Napa Valley. Founded in 1996, the estate encompasses one hundred and twenty acres. Winemaker Sean Capiaux has overseen the planting of the vineyard and selected numerous clones of Cabernet Sauvignon and all seven of the historic Bordeaux varietals for this unique property.
O’Shaughnessy Estate Winery uses modern equipment to produce non-interventionist wines that are naturally fermented and bottled unfined and unfiltered. These techniques allow the varietal character and terroir of O’Shaughnessy Estate vineyards to be the stars of the show.
Today Cabernet Sauvignon is the star of this part of Napa’s rugged, eastern hills, but Zinfandel was responsible for giving the Howell Mountain growing area its original fame in the late 1800s.
Winemaking in Howell Mountain was abandoned during Prohibition, and wasn’t reawakened until the arrival of Randy Dunn, a talented winemaker famous for the success of Caymus in the 1970s and 1980s. In the early eighties, he set his sights on the Napa hills and subsequently astonished the wine world with a Howell Mountain Cabernet Sauvignon. Shortly thereafter Howell Mountain became officially recognized as the first sub-region of Napa Valley (1983).
With vineyards at 1,400 to 2,000 feet in elevation, they predominantly sit above the fog line but the days in Howell Mountain remain cooler than those in the heart of the valley, giving the grapes a bit more time on the vine.
The Howell Mountain AVA includes 1,000 acres of vineyards interspersed by forestlands in the Vaca Mountains. The soils, shallow and infertile with good drainage, are volcanic ash and red clay and produce highly concentrated berries with thick skins. The resulting wines are full of structure and potential to age.
Today Cabernet Sauvignon, Merlot and Petite Sirah thrive in this sub-appellation, as well as its founding variety, Zinfandel.
A noble variety bestowed with both power and concentration, Cabernet Sauvignon enjoys success all over the globe, its best examples showing potential to age beautifully for decades. Cabernet Sauvignon flourishes in Bordeaux's Medoc where it is often blended with Merlot and smaller amounts of some combination of Cabernet Franc, Malbecand Petit Verdot. In the Napa Valley, ‘Cab’ is responsible for some of the world’s most prestigious, age-worthy and sought-after “cult” wines. Somm Secret—DNA profiling in 1997 revealed that Cabernet Sauvignon was born from a spontaneous crossing of Cabernet Franc and Sauvignon Blanc in 17th century southwest France.