BYOC
London
$$$$
PERMANENTLY CLOSED
Located in Juice Club in Convent Garden, this secret speakeasy is accessible after paying a modest cover. Past the hidden door, and down a staircase, is BYOC: a '20s-style candle-lit cavern. It has every element to concoct a cocktail (including the folks to make them) EXCEPT the booze. Just bring whatever spirit you fancy and they'll turn it into something you probably would have screwed up at home.