Drink of the week: Brown Derby Where: Bar Pilar All the big guys have covered the Tuesday night specialty cocktails made by Pilar’s self-described sherpa Adam Bernbach. So what do you do when it’s not Tuesday? Certainly you could choose from the good selection of beers. But this summer you should opt for a Brown Derby. The drink is composed of Bulleit bourbon, fresh-squeezed grapefruit juice, and honey. At first it sounds odd, since citrus…