Named after the redwood tank where the first Riboli family vintners stored their best wine a century ago, this blend of 50% Cabernet Sauvignon, 20% Merlot, 16% Petit Verdot and 14% Malbec shows blueberry and slate minerality on the nose, alongside licorice and mint spices. The palate is overwhelmed by tannins, though black pepper, tobacco and charred meat flavors emerge.