Cut the cabbage, onion, and carrot into bite-sized pieces.
Cut the beef (or pork) into small pieces.
Heat cooking oil in a pan and stir-fry the meat.
When the meat is cooked, add onion, carrot, and cabbage and stir-fry.
Once the vegetables soften, add jajang powder and water, and let it simmer.
When the jajang sauce thickens, turn off the heat.
Pour the jajang sauce over the rice to finish.