A Look at 2015 Napa Cabernet: Tasting at Premiere Napa Valley. Each year, the Napa Valley Vintners Association pulls out all the stops to host its annual fundraising event known as Premiere Napa Valley. Not to be confused with its star-studded charity auction in the spring (known as Auction Napa Valley), Premiere Napa Valley is a more focused event. It is a barrel tasting and auction, in which the wines on offer are all unique creations made specifically and only for this event, offering purchasers the opportunity to own an incredibly rare wine that often represents the very pinnacle of the winemaker’s efforts in that vintage. All the invited bidders…