Shake Shack

At the airport. En route to another critical meeting. Fast food is everywhere, and unavoidable. Even celebrity chefs producing the world's most-praised meals have an occasional hankering. So where do they get their fix?

Wall Street wants McDonald's to be more like Shake Shack, the hamburger purveyor in New York that just filed for an initial public offering that could value it at a billion dollars. But perhaps instead, Wall Street should let McDonald's be McDonald's and be careful about whether Shake Shack is a burger bubble.

At the airport. En route to another critical meeting. Fast food is everywhere, and unavoidable. Even celebrity chefs producing the world's most-praised meals have an occasional hankering. So where do they get their fix?

Wall Street wants McDonald's to be more like Shake Shack, the hamburger purveyor in New York that just filed for an initial public offering that could value it at a billion dollars. But perhaps instead, Wall Street should let McDonald's be McDonald's and be careful about whether Shake Shack is a burger bubble.