Friends, I don't know what these noodles were called, but I do know this--they cost $1, they tasted awesome and I got them at a place called Mi Qung Hoi An in Nha Trang, Vietnam, which was otherwise a culinary wasteland.
Yeah, that's a quail egg. The noodles were quite thick, almost udon-sized and it came with a rice cracker to crumble in it.
Thank you very much to the Ravenous Couple, who in addition to being very hungry are experts in all forms of Vietnamese noodles. This dish is called mi quang and you can read their post about it here.
Now that I am reading their post I realize that I should have mentioned the turmeric and really there wasn't quite as much soup as I had remembered. This is why I shouldn't wait two days to post things, eh?