Salt salmon, place in lighly oiled frying pan, fry 3 minutes total, turning once. Mix daikon, sake, egg and salt. Spoon this over salmon pieces that have been laid in bamboo steamer. Steam this 5 minutes. In medium saucepan, combine sauce ingredients except lemon, bring to boil, allow to thicken remove from heat. Place salomon and daikon on plate, spoon sauce over, squeeze lemon over.