D-cubed Cellars started in 1994 with the Howell Mountain Zinfandel made grapes grown at the Black Sears Vineyard. In 2010 D-cubed Cellars was called a Top Artisan Winery by Wine and Spirits Magazine, a wonderful honor.  For many years D Cubed Cellars has been offered for tastings at Vintner’s Collective – a multi winery tasting room in downtown Napa.