The process of joining two plants together sounds technical and far away from your glass of wine, but it is the most important discovery in wine's history.  On today's podcast Winemaker John Adams of Wildsound Wine talks us through the history and process of growing two different species of vines together and how it saved the wine in your glass.  For SOMM TV subcribers, don't forget the fourth SOMM Film "Cup of Salvation begins streaming on sommtv.com and all SOMM TV devices Feb 23 with hours of exclusive additional content.