Rare Gems at Abreu Vineyards Winemaker Brad Grimes is crafting some of the finest Cabernets in Napa Valley from Abreu's Cappella, Madrona Ranch and Las Posadas vineyards Meticulous viticulture is key to the commitment to quality at Abreu Vineyards. (Matt Morris) By May 26, 2021 Winemaker Brad Grimes is crafting some of the finest Cabernets in Napa Valley from Abreu's Cappella, Madrona Ranch and Las Posadas vineyards. Wine Spectator's James Molesworth gets an inside look. Watch the videos! Member-Only Content Premium Subscription Join today and get immediate access to this article, and to our entire database of more than 400,000 wine ratings. It only takes moments—but it will help you drink better all year long.