Set among gently rolling hills and cooled by bay breezes, our Carneros Estate Vineyard has the ideal soil and climate for producing exceptional, terroir driven wines. Steven Rogstad. Winemaker The difficult clay soils and fog shrouded mornings provide ample stress to forge wines of verve and brightness. cuvaison.com. Alc. 13.5% by vol. Estate bottled by cuvaison estate wines, Napa, CA.