Can you keep a secret? Um, sure. Assuming we don’t count the nameless masses you spill your guts to every day on your blog. Oh, what the heck. We’ll let you in on this one anyway: Bourbon & Branch, a 1920s-inspired speakeasy, has quietly opened for business in an undisclosed location in the Tenderloin. When you call for a reservation, you’ll get a password that’ll get you in. Studded leather banquettes, antiqued mirrored oak tables, and red velvet walls recall Prohibition Era style at its swankiest. Dramatic chandeliers constructed from tiers of glass tentacles add a modern touch while whitewashed brick walls are ideal for entertaining molls with shadow puppets. Exercise your 21st amendment rights with Classic and Forgotten cocktails, experiment with a Hell’s Kitchen concoction, or just ask the barman to navigate you through the long and impressive gin-friendly list. (Whatever you do, don’t ask for a cosmo. House rule.) The original speakeasy in the basement — complete with bullet holes, secret escape routes, and a mural — will eventually be open as a private event space for your most super-secret to-dos. Like your next birthday. To make a reservation at Bourbon & Branch, call 415-673-1921 or go to bourbonandbranch.com.