Boil the Soba noodles till cooked through according to the direction of the package, drain, then rinse with cold water many times. Let drain and set aside.
Heat the sesame oil in a large pot and add (in this order) chicken, carrot, bean sprout, shiitake mushrooms and snow peas stiring till the chicken is cooked through. Add the dashi soup stock, shiitake soaked water, tamari or shoyu and mirin, stir through. Add spring onions, bring to the boil and reduce heat, gently add KUZU starch mixture into the pan stirring continually. Add the noodles gently to the pot, stir and take off the heat. Add some wasabi mixture to taste.
Serve and enjoy!
OR you can warm the boiled noodles under hot running water, divide into you serving bowls and pour the chicken soup over the top!