Arguably Bangkok's most popular hawker stall, Naay Uan's recipe for success must lie in its simplicity. His kuay jap, a basic but delicious soup of of pork offal, thick rice noodles and broth draws literally hundreds of hungry diners to Chinatown every night:
(For a larger version of this image go here.)
But that broth... Naay Uan's kuay jap broth is probably the most pepper-intense dish I've ever consumed. The guy must pour bags of ground white pepper into his broth, leaving the diner with a mildly burning, spicy sensation. For me this is the highlight, but I think most people come for the meat, which includes your choice of pork heart, stomach, tongue or crispy deep-fried pork.
Cnr Soi 11 & Th Yaowarat (Google Maps link) 02 224 3450 7pm-late