Sometimes the simplest spots are best, and it doesn't get much simpler than Tacos D.F. Basically a taco truck parked indoors, Tacos D. F. hands you the best tacos in the city, hands-down, through a hole in the back wall. It cooks up plenty of other things (soups and stews, tortas and burritos), but tacos are the kitchen's true pride — filled with meats hot off the grill that need nothing more than a squeeze of lime or maybe a touch of handmade salsa to be perfect. The asada and the carnitas are our favorites, but depending on the day, the hour and the mood of the crew in the back, upwards of a dozen varieties might be available — every one of them fantastic, none with the least bit of pretension.