The Green Room
The Green Room is on Rogers Avenue in Prospect Lefferts Gardens, Brooklyn, a neighborhood that has been on the edge of various waves of change for long enough that a genuinely good cocktail bar there still reads as a genuine discovery rather than a predictable arrival.
The room runs artisanal cocktails alongside locally sourced food, live music, and an atmosphere calibrated somewhere between neighborhood bar and proper destination. Friday and Saturday go late. The rest of the week closes at ten. For PLG residents, The Green Room is a local bar that doesn't ask you to lower your expectations; for people making the trip from elsewhere in Brooklyn or Manhattan, it's a reason to make the trip.
The bar is new enough that its long-term character is still setting. The neighborhood and the programming suggest it's aiming to become a genuine institution rather than a passing trend.