Don Melchor, named for the founder of Concha y Toro, is based on a single parcel on a terrace above the north bank of the Maipo River. With this 2017, it’s now a stand-alone brand, led by winemaker Enrique Tirado and his team. The wine is a cool, black currant–scented classic from the Andean highlands, a powerful cabernet with quiet, Chilean restraint. The care of its farming shows in the detailed earthy tannins, which time in oak transformed into textural finesse. Top vintages from Puente Alto develop over the course of two decades or more, and this one should age beautifully.