10-18-12 Sour GABF

We get a tour of sour and funky beers at the Great American Beer Festival with Michael Tonsmeire, the Mad Fermentationist. We talk to Chad Yakobson of Crooked Stave, Jason Yester of Trinity Brewing, Will Meyers of Cambridge Brewing, Patrick Rue of The Bruery, and Christopher McGarvey of Front Street Brewery.