Last week in A Sneak Peek at ZAP Festival Zinfandels, we went through some of the non-Sonoma County Zinfandels that will be featured at the upcoming ZAP (Zinfandel Advocates & Producers) annual grand tasting at its Zinfandel Festival, to be held in San Francisco, January 27 - 29.

While there were some gems to be found in that mix of appellations, there is no doubt that the great AVAs of Sonoma share a disproportionate number of glorious old vines, and it is from these old vines that the most sought-after wines are made. The question I have is: Are they really the best?