Wine Advocate 94 points - This big red brims with dark, rich, chunky blackberry and wild berry fruit, with notes of black licorice that edge toward prune. Maintaining a fine balance for its size, this is extracted, with firm, chewy, peppery tannins. Syrah and Petite Sirah. Best from 2015 through 2028. From California.J.L.
From a more challenging vintage, the 2011 Relentless exhibits a similar opaque blue/purple color as well as remarkable concentration and balance. With stunning perfume, purity, texture and full-bodied richness, the 2011 is slightly more evolved and softer than the 2010, but it offers much of the same character. This compelling effort is one of the superstars of the vintage in 2011. (Oct 2013)
With this Syrah, Shafer honors Winemaker Elias Fernandez, whose relentless pursuit of quality has marked his nearly two decades at Shafer Vineyards. Multi-layered and expansive, Relentless combines the concentrated black cherry and blackberry flavors of Petite Sirah with black pepper spice and an earthiness derived from Syrah, both of which are planted in Shafer's hillside vineyard adjacent to the southern border of the Stags Leap District. A deep, dark and delicious wine, Relentless is aged for 25 months in French oak barrels.