Parrillas del Sur, web site, 4230 Annandale Road, #120, Annandale, VA, 703-642-1248, behind the Western Union, not visible from Rt. 236 but not far away either. (Metro Trip Planner – opens in new window) [Yelp]
One of the two or three best Bolivian places around and more consistent than most. Right now this is perhaps my favorite Silpancho. The chef is from Santa Cruz, which doesn’t seem to make a huge difference, but it is a slight variation on the Cochabamba emphasis in all the other places. They still have mostly Cochabamba dishes, though some of the other meats and small bready dishes are more in the Argentinean direction. Beware: it can fill up and get crowded on weekends, leading to waits, so go fairly early. It is also slightly “nicer” than most area Bolivian restaurants, yet without feeling sterile or overdone. So this one I can definitely recommend.