I’ve enjoyed many of co-owner/winemaker Duncan Ross’ wines from Arrowhead Spring Vineyards in the past, but his cabernet franc remained elusive — mainly because it’s typically only available in the winery’s tasting room. So on my recent visit to Empire State Cellars, not long after Duncan had been there to pour several of his recently released reds, I was thrilled to find this bottle of Arrowhead Spring Vineyards 2010 Cabernet Franc ($25). The ripeness of the 2010 Niagara vintage is on full display from the moment the wine settles in the glass — and so are the 22 months this…