Slice the cabbage and onion into thin strips.
Cut the thinly sliced beef into bite-sized pieces.
Add oil to a pan and stir-fry the beef.
Season the beef with salt and pepper.
Add the onion and cabbage, then stir-fry together.
Add soy sauce, sugar, and cooking wine to season.
When the vegetables are softened, place the mixture over rice.
Sprinkle roasted sesame seeds on top as desired.