Heat broth, soy sauce and mirin to a gentle simmer in a small sauce pan. Transfer to a soup bowl.
Cook Soba noodles according to package directions, drain well and place on a plate or wooden board.
Add ginger, scallions and sesame seeds to plate/board.
Using chopsticks, dip a portion of noodles into the broth, adding any of the other of the ingredients to taste. Can be eaten hot or cold.
Recipe by Lakewinds Food Co-op at https://www.lakewinds.coop/recipes/all/exceptionally-delicious-soba-noodles-dipping-sauce/