Zhanglaoerliangfen
Zhanglaoerliangfen has a long history and is well respected for its no-nonsense grub and a mean bowl of cold noodles. The size of a shoebox, its 30 or so chairs are never empty. A large menu on the wall features the standards: red chili oil dumplings, long chao shou wontons, etc. But the Tian Shui Mian sweet and spicy noodles cannot be missed. Each bowl is assembled on the spot with your only addition being an extra spoon of chili sauce, if you like. What makes these Tian Shui Mian so special is not just the bath of red hot chili oil, sesame seeds, ground Sichuan peppercorn and sugar. It is the perfect consistency of the handmade noodles. Thick and slightly chewy, it makes the perfect canvas for the sauce.
See the blog post http://jingtheory.com/the-greatest-bowl-of-noodles/