Stonestreet wines are all grown on the Jackson Family's Alexander Mountain Estate; 235 individual vineyard blocks on the western ridge of the Mayacamas Mountain range towering over the Alexander Valley below. High elevations, volcanically derived soils and cooling maritime breezes make it a very unique location and one where mountain grape growing reaches a pinnacle. Most of their wines are single vineyard releases that critics go wild over. Robert Parker wrote "Stonestreet's wines continue to go from strength to strength under the direction of South African winemaker Graham Weerts. The Chardonnays are spectacular." This 2015 from the famed Upper Barn vineyard block was barrel fermented with native yeasts and aged 11 months in 48% new French oak. Less than 1,000 cases were made.
The Wine Advocate scored this 95 points saying "The 2015 Chardonnay Upper Barn Vineyard opens with lovely grapefruit, fresh pears and apple pie notes with touches of croissant and toasted almonds plus a waft of brine. Medium-bodied, very elegant and very refreshing, the palate and a wonderfully mineral character and long, beautifully nuanced finish."