This week on A Taste of the Past, Linda invites food historian and noted author Andy Smith to the program to explore and dissect the history of the most popular tuber and a staple of most diets - the potato. Did you know there are over 200 varieties of potatoes? Find out more about the history evolution of the potato on this especially informative episode of A Taste of the Past. This episode was sponsored by Cain Vineyard & Winery .