A sign on the wall of Proletariat reads “Rare, new and unusual beers,” and on this the East Village spot delivers. The narrow space — its walls covered with framed postcards and newspaper clippings featuring tattooed muscles — is now home to hard-to-find craft brews brought to the neighborhood by the minds behind Death & Co. The menu rotates through obscure beers as they become available, and the adjustable plastic letter board menu changes throughout the night, depending on what’s still left. Beer nerds who settle in on one of Proletariat’s ten stools are sure to geek out over the obscure German brews most folks have never heard of: Mahr’s Bräu Mastodon, Engelszell Gregorius Trappistenbier, or perhaps Professor Fritz Briem, all rarely found in other bars in the city. Meanwhile, a modest list of edible options includes upscale bar food like a beer-braised brat sandwich and a lamb burger.