Openings January 19, 2011 01/19/2011 10:57 a.m. Smashburger vs. Shake Shack in Brooklyn? By Daniel Maurer Diner’s Journal has the address of the city’s first Smashburger: It’ll open in April at 80 DeKalb Avenue, just six blocks from Brooklyn’s first Shake Shack! [Diner’s Journal/NYT] Tags: Openingsbrooklynopeningsshake shacksmashburger Smashburger vs. Shake Shack in Brooklyn?