Fodor's Expert Review Zhang Lao Er

Located next to the Wenshu Monastery, Chengshi Liangfen has been doling out street snacks since 1944. Their claim to fame is the tian shui mian, or sweet water noodles. It's cold rectangular cut noodles dressed with a vinaigrette of sesame paste, garlic, sweet soy sauce, chili oil, and crushed Sichuan peppercorn.