http://stream.publicbroadcasting.net/production/mp3/national/local-national-966308.mp3
St. Louis' Joe Marrocco of Kaldi's Coffee is already a champion barista. As the top scorer in the South Central regional competition earlier this month, Marrocco heads to the United States Barista Championships this weekend as a man to beat. Nationals are underway in Houston, where competitors are judged on a number of factors, including taste, technical skills, and presentation. We caught up with Marrocco during a recent practice session.