How many vintages have John Shafer of Shafer Vineyards, Boots Brounstein of Diamond Creek Vineyards, Margrit Biever Mondavi of Robert Mondavi Winery and Jim Barrett of Chateau Montelena seen in the Napa Valley? Let’s just say ‘plenty’. On February 24th 2011, this venerable quartet kept a rapt audience entertained with details of their experiences in the wine industry over the last fifty years. In this, the third of three instalments (Parts 1 & 2 are here and here), you’ll learn about frozen bottles of Chateau d’Yquem and how Twitter has nothing on Al’s Red Book. Plus a disturbing tale about Robert Mondavi’s socks…