Krupp Brothers was founded in Napa Valley’s eastern hills in 1991 when Jan Krupp, a physician with an interest in wine, purchased 41 acres to plant vineyards. A few years later his brother Bart, a businessman, joined him in the enterprise. They purchased another 750 acres on the south side of Pritchard Hill and had them cleared and planted. Today the estate owns two important vineyards, the Stagecoach and Krupp Brothers Vineyards. Jay Buoncristiani is winemaker. The estate makes red and white wines, including Cabernet Sauvignon, Syrah, Chardonnay and blends. The wines have earned ratings in the mid-90s from reviewers.