The 2015 Cabernet Sauvignon Four Flags reveals an attractive bouquet of cassis, black plums, dark chocolate, warm spices and loamy soil that has already nicely integrated its 100% new oak. On the palate, it's medium to full-bodied, deep and layered, with a chassis of rich, fine-grained but firm tannins, good concentration and a long, youthfully firm finish. This is very impressive and an appreciable step up above the D2 this year. It will demand several years of bottle age and enjoy two decades of longevity, perhaps more.