Turnips (medium), Egg whites, White fish fillets (such as cod), Shiitake mushrooms, Leeks, Spring onion, Ginger, Salt, Oil, Sauce:, Dashi broth, Soy sauce, Mirin, Potato starch in a bit of water
You can get sprats in the supermarket in the autumn and winter. The bones are edible as they're such small fish.
Sprats, Turnip or mooli, Your favourite mushrooms, Rice flour with salt, Oil for frying, Spring onions or chives, A, Dashi broth, Light brown sugar, Soy sauce, Sake