Hertelendy Vineyards is a Napa Valley producer founded by Ralph Hertelendy, whose family has centuries of winemaking history in Central Europe, with ancestral roots in volcanic vineyard sites in Hungary's Badacsony region on the northern shore of Lake Balaton. The label was established in Napa Valley to continue that heritage on comparable volcanic terroir, producing approximately 750 cases annually in close collaboration with winemaking consultant Phillip Corallo-Titus since the 2013 vintage.