Once you’ve used the password to gain access, the void slowly comes into focus — revealing a dark mirrored wall that multiplies the stylish clientele and creates endless rows of colorful bottles behind a huge bar. You’re quickly ushered down the narrow corridor into an intimate dining suite behind gauzy curtains. This is the dark clandestine world of the Bay area’s best craft cocktails. So settle in and imbibe the spirit of the Roaring '20s.