Park Slope’s burger boom...and bust

Our expert finds out how two upstart burger slingers stack up against a Fifth Avenue classic

We're used to seeing ATM vestibules replacing our favorite neighborhood shops, but today it seems like burger joints are popping up instead—see 5 Napkin Burger, Black Iron Burger Shop. The ground-beef tidal wave continues as A Hamburger Today founding editor Matt Jacobs checks out how two newcomers—Brooklyn Flipsters and Corner Burger—hold up against old standby Bonnie's Grill in Park Slope.

Photos: Jori Klein