3 carrot jerusalem artichoke soup white Recipes

whole dried shiitake mushrooms, chicken thighs bones removed and kept, salmon fillet skin on , scales removed, sake, satoimo or jerusalem artichokes peeled, daikon peeled, carrot peeled, whole spring onions (scallions) white part only, trimmed, mitsuba root part removed, whole yuzu or lime, whole tiger prawns peeled but tail left on, shoyu, mochi, salt

jerusalem artichokes, juice of 1/2 lemon, butter, leek, white part only, sliced into 1/2inch pieces, carrot, sliced into 1/2inch rounds, chicken stock (preferably homemade ) or water, salt and freshly ground black pepper, heavy cream, freshly grated nutmeg