Although similar in structure and flavor to cabernet sauvignon, this red wine grape is not quite as full-bodied, and has fewer tannins and less acid. It is, however, more aromatic and herbaceous. Unlike Cabernet Sauvignon, Cabernet Franc grows in cooler climates and ripens early. Therefore, it can be particularly important if weather conditions create a less-than-perfect Cabernet Sauvignon crop. Under such circumstances, the addition of Cabernet Franc might salvage the vintage.