I was watching Gordon's Great Escape: Vietnamese and they do a scene with an old lady selling soup. However, it isn't clear what kind of soup she actually makes only that it at the very least contains banana blossoms, bean sprouts, water spinach thins, vermicelli noodles, sweet basil and the broth seems to be an orange like color.
A link to the video is here: Gordon's Great Escape: Vietnamese and for your benefit the link should led to start of the scene that I am talking about. If it doesn't the scene starts at 20:07 ish.
Hopefully, that is enough to work off of.