Kathryn Walt Hall - Napa Valley vintner

Nov 04, 2016, 04:04 PM

Politics, wine and water - Kathryn Walt Hall, author and former US Ambassador to Austria, discusses her new book, A Perfect Score - the story of a husband and wife team's climb from amateur wine-makers to vintners at the top of their game. I spoke to Kathryn on BBC Radio 5 Live's Up All Night with Rhod Sharp.