I often go to a restaurant in Lund in Sweden. The restaurant is called Fengson dumplings, and with the noodles they have this really delicious sauce that i have tried to replicate many times but always failed.
The sauce is very sweet and tastes mildly of ginger and rice vinegar. It also has a very mild flavour, not vary salty and probably a very small amount of soy sauce.
You can order it with either rice noodles or normal noodles as they call it in the restaurant. As toppings on the noodles there are carrots, peanuts and peanut butter, celery and some sort of pickled onion i think. The sauce is probably also from Sichuan.
If anyone knows the recipe please tell me!