Proof didn't start as a bar — the basement under 30 N Queen St used to be a fitness studio before Ecklin Development Group gutted it in 2022 and found a former bank vault waiting underneath. That's the room The Carl Zeplin & Tim Gross Jazz Duo plays tonight, 6 to 9 PM: stone walls, a brick archway, low light, and a staircase easy to miss unless you're looking for it. The transformation kept the vault's bones and added a drink list that goes deep — 500+ spirits, whiskey-forward, with rare Irish and Japanese pours alongside everyday sippers. Order off the classics or try the South Frog (gin, tomato, basil, parmesan vermouth, pepper oil) while the duo works through a set built for a room this intimate. LNP's bar writers said the food alone is worth the trip — mushroom risotto and crab cakes back that up. No cover, just the stairs and the sound of upright bass carrying through a vault built to keep things quiet.
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