Frozen yogurt has been the hottest (or coolest?) thing to hit DC this summer, with constant lines out the door at TangySweet and Mr. Yogato. We recently discovered a new fro-yo source in an unlikely spot—Nando’s Peri-Peri in Chinatown, best known for its spicy grilled chicken. There, custardy vanilla frozen yogurt is self-served from a machine next to the fountain sodas. Yes—that means your $2.95 bowl is bottomless! This could be seriously dangerous for fro-yo fanatics like yours truly, but an employee did inform us that the delicious yogurt—which tastes more like vanilla soft-serve—is fat-free. Nando’s Peri-Peri, 819 Seventh St., NW; 202-898-1225; nandosperiperi.com.