By Mac McCarthy
Reason: These wines take getting used to -- They are dense, intense, tannic, and acidic -- or they are expensive and risky. Stay away until you've got some experience under your belt....
Lew Perdue is founder of SavvyTaste.
John Engstrom is president of Taster's Guild Diablo Chapter.
(Terrific photo of the ZAP festival courtesy Tom Regner.)