Wash the cabbage thoroughly and cut it into bite-sized pieces.
Julienne the onion and carrot as well.
Add cooking oil to a pan and preheat over medium heat.
Stir-fry the onion and carrot first.
Add the cabbage and stir-fry over high heat.
Season with salt and pepper to taste.
If desired, add soy sauce or oyster sauce and continue stir-frying.