Boil about eight cups of water. Drop the soba noodles into the boiling water and cook over high heat for about 4 to 5 minutes. Drain. Plunge into a bowl of iced water. Drain once more.
Heat the sesame seed oil in a frying pan. Add the sliced shiitake mushroom caps. Stir for about ten seconds. Add the bunashimeji. Stir for five seconds. Add the enoki. Stir and turn off the heat. Sprinkle the mushrooms with salt.
Place the drained noodles in a bowl. Add the soy sauce, rice vinegar and honey. Toss well. Add the mushrooms, sesame seeds and scallions. Toss some more. Serve.