The 2015 Rocket Block James Berry Vineyard—which had been assembled in preparation for its bottling in two weeks' time—is superb, revealing complex aromas of cherry, raspberries and spice. On the palate, it's full-bodied, textural and bright, with an expansive core of juicy, succulent fruit framed by fine-grained structuring tannins. This rendition of Rocket Block—from a cooler, northeast-exposed parcel—is one of the most elegant, vibrant wines in the Saxum cellar, exemplifying not only Smith's evolution as a winemaker but also what's possible in Paso Robles. The final blend is 89% Grenache and 11% Mourvèdre, matured in concrete and neutral oak. It should enjoy two decades of longevity.