Silver Oak Alexander Valley Cabernet is predominantly Cabernet with two years of American Oak aging, in barrels from our own cooperage in Missouri. It is then further aged for two years in the barrel before release. In 2016, the Oakville winery became the world’s first LEED Platinum production winery for Existing Buildings, Operations and Maintenance (EBoM). In 2018 the Alexander Valley winery received LEED Platinum certification for Building Design and Construction (BD+C). The two Silver Oak wineries are the world’s first wineries to achieve each of these certifications.