I had this last Sunday at the Taiwanese noodle stall after I had recovered from a bad flu.
In that bowl of wonderful broth was a soft boiled egg, hand made noodles, fried anchovies, bok choy, fried leeks and chilies. It was magically restorative! I also had some cold steamed peanuts. That was a wonderful lunch. I never had anything like this when I lived in Taiwan, so I must not have gone to the right place.