Well, I had a friend who's mom was half irish half vietnamese. I had the good fortune to try her homemade pho. I was told his grandmother, who was 100% vietnamese, used to run a little food stall back at their home, and she was whom his mother learnt her culinary skills from. I've been to two different pho places around los angeles, one downtown and one in silverlake, and they are both run by vietnamese immigrants. The tastes weren't too far off and I've gone back to both places for their delicious vietnamese noodle soup.
So even though I can't really describe to you exactly what I tasted, if there's a place (or two) you find worth mentioning, then I would love to give that place a shot and try it out.