In 1980, we began a 14-year series of trials in conjunction with UC Davis, to identify Cabernet Sauvignon clones best suited to our Rutherford Bench terroir. Two clones (4 and 6) were ultimately selected for grafting to rootstocks planted in the well-draining, alluvial fan soils of our estate vineyards. As a component of our Georges de Latour and other reserve Cabernet Sauvignons, Clone 4 gives the blend pronounced, lush, full flavors and has softer, more approachable tannins in its youth. Also known as the Mendoza clone, it was identified and isolated in Argentina and then brought to the United States. Known for its larger berries and tighter berry cluster, resulting in a Cabernet with lush, round and opulent style.