Prepare nuts by toasting them in a dry wok or in the oven until lightly golden. Toast the sesame seeds in the same manner. When cool, place the nuts into a small plastic bag, seal, and crush the nuts into small bits by rolling over them with a heavy object such as a rolling pin.
Taste the suimiyacai and if you find it too salty, give it a quick rinse. (We do not do this.)
Bring a large pot of water to a boil and cook noodles until done to your liking. While noodles are cooking, add fragrant oil (including some of the flakes), soy sauce and sesame oil to each serving bowl and stir to combine.
When noodles are done, remove them from the pot, give a shake but leave them slightly wet, and add directly to noodle bowl. (Retain some noodle water in case you need to thin your sauce.) Mix noodles into sauce. Arrange small piles of suimiyacai, mixed nuts and sesame seeds, and scallions separately on top of the noodles. Serve warm, and mix all ingredients into the noodles before eating.