What does it take to turn a hot dog cart into a billion-dollar brand? In this episode of Columbia Bizcast, former Shake Shack CEO Randy Garutti joins Columbia Business School's Distinguished Speaker Series for a candid conversation with Professor Jorge Guzman. From earning $6/hour at Chili's to leading one of the world's most iconic fast-casual restaurant chains, Garutti shares the key leadership lessons that fueled his journey.