I am in town for work and looking for a good gastro-pub or brewpub in the dc area for lunch on Saturday. Something casual and near a metro stop would be great. I am staying near the Federal center stop on the blue line. I would prefer some place with a good tap list, preferably on the local side, and good eats. The tap list doesn't need to be huge...a small but well selected tap list is always appreciated. Cask-conditioned beers are a plus....suggestions?