The burger at Shake Shack, Minetta Tavern, Emily, and the Spotted Pig. What do all of these have in common? The customized blend of meat was created by Pat LaFrieda, a meat purveyor in North Bergen. We sat down to chat with Pat about how he's created some of the most iconic burgers in New York City, butchery as a form or art, and what it takes to be successful as a small family business.