1. Stir-fly the chopped onions in pan till fragrant, then stir in the panko and the milk.
2. Mix the egg, the minced meat to (1).
3. Shape the minced meat into a hamburger.
4. Grill hamburger meat untill cooked.
5. Add KIKKOMAN Teriyaki Marinade Original Flavour and simmer for 1 min after boiling us the sauce and serve.