Super Tacos & Bakery
Super Tacos & Bakery (same place, used to be called Tacos Pepitos Bakery 2), 1762 Columbia Road NW, Washington, DC, 202-232-7121 (Metro Trip Planner - opens in new window) [WaPo | Yelp]
Maybe the most authentic Mexican place in DC right now. They are really trying. Tacos and classic Mexican dishes of all sorts. It is a bakery and sandwich place as well; they have all the classic sandwiches you can get in Mexico City. They have huaraches too. Not perfect but pretty good. Excellent for snacking. Opens at 8 in the morning. A sign of progress. Lots of take out and some stools.