Almost all of Navarro's varietal releases are a cuvée created by blending wines produced with grapes of the same variety but grown in different vineyard sites or blocks. The first few tastings of any grape variety determine the relative quality of the various lots, with our favorite becoming the base wine. We produced over a hundred barrels of 2013 Zinfandel from heritage vines, all over sixty years of age. Our favorite was a lot of ten barrels produced from the Old Block in Al Tollini's vineyard, planted by his Dad and Granddad in 1932. You'd think with over 100 barrels to choose from, that we'd be able to improve this wine, even a little. After a couple of tastings it was obvious that the Old Block couldn't be improved upon. It's delicious but since the grapes are solely from Al's oldest field, we could only bottle about half of last year's production; this vintage will sell out quickly. Gold Medal winner.