In proper prohibition fashion, this unassuming brick saloon, tucked down a narrow cobblestone alley off of Randolph street, is relatively easy to miss. But beyond its speak-easy-style facade, the spot is anything but austere. The dining room resembles an elegant French bistro, with low-hanging chandeliers, a luxurious marble fireplace, and an eclectic collection of vintage mirrors. As the title makes clear, the bar specializes in champagne, offering 12 varieties of the stuff along with a bubbly-focused cocktail program -- not to mention the joint's full menu of bistro-classics like steak frites, charcuterie, and fresh oysters (yeah, the place has a raw bar, too). And in the warmer months, when the fireplace becomes somewhat superfluous, locals can carry their champagne flutes out onto the Parisian style brick patio, where round tables are framed with with tea lights and arrangements of block-printed Moroccan tile.