Petaluma has chosen the B&V Vineyard at Mount Barker on the eastern boundary of the Adelaide Hills to grow it's intense Viognier fruit. Although it's a westerly facing slope, exposing the vines to the hot afternoon sun, there is a high day to night temperature change and altitude of 1,100 feet (335m) making it absolutely ideal. The geology around Mount Barker is based on granitic micaceous schists associated with quartzite, producing well drained sandy loams of moderate fertility ideally suited to Petaluma's style of Viognier. Hand picking when lusciousness and structure are in balance is imperative. Fermentation in prior use oak barriques has enhanced the complex and intense flavours originating in the vineyard.