I’ve used it sometimes with chicken-apple sausage. Fry up the sausage, saute onions (optional) with them, then add cabbage and tart apple and saute them as well.
Yakisoba - my (non-Japanese) mother’s version, I suspect, was basically cabbage fried with bacon, mixed with noodles and flavored with soy sauce. There are more authentic recipes you can google, but I don’t have a specific one to recommend.
I saw this recipe for bierocks recently on Youtube and thought they looked good, but haven’t actually made them.
https://m.youtube.com/watch?v=h_xqJtGWvhg