After washing the vegetables, mince the onions.
Chop the napa cabbage. You can use regular cabbage, but napa cabbage will have more volume and a sweeter taste.
In a bowl, mix the onions, napa cabbage, minced meat, eggs, ketchup, panko, Worcestershire-style sauce.
After mixing, shape into patties. Frying the patties will cause them to expand, so shape the patties slightly smaller.
Coat with the egg, flour, water mixture and then with panko.
Pay attention to the cutlets while frying, once the cutlet has browned, it is done.
Eat with tonkatsu sauce, Worcestershire-style sauce, or aurora sauce.
Note: Aurora sauce is made by mixing equal parts of ketchup, mayo, and soy sauce. Give it a try!