All wines produced by ONE come from single vineyards from one of the 16 sub-appellations around the Napa Valley. The idea of producing 100% varietal wines from these "single vineyard" sub-appellations, are to show how different wines can taste being grown just a few miles apart. Different micro-climates and terroir play a big role in this differentiation of taste.

Atlas Peak

This high elevation vineyard sits in well drained soils consisting of porous volcanic material and gravelly loam making it ideal for growing Cabernet. Full sunlight throughout the the moderately warm days and cooling afternoon winds from the San Francisco Bay give way to complex and concentrated fruit. These wines exhibit structure, firm tannins, and lush rich fruit with bright cherry and blueberry characters.

Howell Mountain

A mountain vineyard that sits above the fog line overlooking the valley, it rests on almost entirely volcanic soils with excellent drainage. Significantly cooler than the valley floor, full sun all day and moderately cool nights help maintain acidity. The wines from this vineyard are of great balance, deep color, powerfully rich, velvety tannins, and excellent acidity for aging. The fruit is very characteristic of ripe cherry, blackberry, and currant.


A steep hillside vineyard located west of the town of Calistoga, this 19 acre vineyard is planted in rocky volcanic and stony loam soils. Hot days provide color and flavor while cooler nights help maintain acidity and structure. Calistoga has the highest diurnal temperature variations in all of the Napa Valley. The grapes from this climate are characteristic of black fruit profiles.



Oak Knoll

A small vineyard on the eastern side of the district consist of mostly silty clay loam soils. The grapes benefit from longer growing seasons with slightly cooler temperatures, marine air, and fog. producing small yields. Elegant in style, flavors consist of cassis, tobacco, and spice.






This vineyard is a stones throw away from the famous Opus One Winery. Gravelly and sandy soils with exceptionally good drainage; a mix of clay and well-drained sandy loam makes this a sweet spot in the valley to grow Cabernet Sauvingnon. The vineyard gets limited wind and fog off the San Pablo Bay due to the Yountville Mountains. As the end result, the wines are rich and full-bodied with cassis, black currant, black licorice, and cedar flavors.


Located on the western side of the town of Yountville, this 22 acre vineyard sits in gravelly silt loams, sedimentary in origin, and gravelly alluvial soils with rock. Moderately warm days and cool evenings allow slow and even ripening, giving great balance between sugar and acid. Ideal for producing Cabernet that is more subtle, gentle and reserved than those from warmer AVA's up valley; however, a more polished wine than the harder, earthier versions from the cooler AVA's down valley.