In true speakeasy style, there is no sign here, only a barrel attached to the wall above the door. There is usually a line beneath that barrel, but it is well worth the wait. Once inside, the bartender will interview you regarding preferences. After a minute or so, he (or she) will suggest a drink that matches your tastes, and proceed to expertly craft it. Everything here is top-notch-- the spirits, the implements, and most of all the techniques. I've found precious few bars like this in my travels, and am always happy when I descend the stairs into the darkness that is Single Barrel.