Don't let the dentist's office exterior fool you — The Flat is open for business, and contains one of the city's best-kept secrets: Their signature frozen mojito manages to improve upon perfection, taking a mojito and making it even more enticing through the miracle of osmosis. The delectable combination of crushed fresh mint, rum and a hint of lime is like that Icee you couldn't put down as a kid, even though it gave you a brain freeze. The bits of mint also serve as a breath freshener when you're discussing after-hours plans with that smoking hot brunette on your right.