Put Panko in a large bowl, add milk and stir.

Add meat, onion, egg, salt, pepper and worcester sauce to the Panko mixture. Mix with your hands very well.

Divide the meat into 8 pieces and roll into oval balls. Push down to flat steaks and make an indentation in the middle. (if you would like to freeze some, wrap each steaks with plastic.)

Heat oil in a frying pan at medium temperature, place the patties in the hot oil, and fry for 4-5 minutes on one side. Flip over and fry for 3-4 minutes covered until cooked through.

Meanwhile mix ketchup and worcester sauce in a bowl.

Uncover the pan, add sake, then ketchup sauce, and cook for 30 seconds.