medium size prawns (peeled and without the head but with the end of the tail) • cleaned medium squid (about 11 oz. of squid) • shitake mushrooms without stems • small scallion • For the sauce: • cup of dashi broth (Japanese stock base) • tbsp. of mirin • tbsp. of Japanese soy sauce • oz. daikon radish (daikon oroshi) • tbsp. of ginger • For the batter: • egg yolk •