Last week I visited at a noodle shop that I thought was new, but my coworker said it’s been around for a few years.
This is mainly what they sell, standard kway chap noodles served Vietnamese style in clear chicken stock with rice noodles of medium thickness (you can also get instant ramen served in kway chap stock).
This is opposed to the other style of kway chap popular in Thailand, the Chinese kind in brown stock with blood cubes, bamboo shoots, and spiral flat noodles (this Chinese kind is usually done very poorly in Thailand IMHO, but when done properly, with fresh ingredients and duck meat, can be very tasty).
A vital key to surviving in any given area over an extended period of time is knowing the secret menus of your favorite haunts. The secret menu of this place was somewhat amusing:
I loves me some chicken bones! (They use a bunch of these for the broth every day.)
Notes: This shop is located on Soi Srisawat between RMU and Spirit House Kway Chap, on the right side if headed away from RMU. Kway chap w/o egg 20 baht, w/egg 25 baht, chicken carcass 20 (25?) baht.