Wash the cabbage and radish greens thoroughly and cut them into bite-sized pieces.
Chop the onion and garlic.
Add sesame oil to a heated pot and stir-fry the garlic and onion.
Add the radish greens and cabbage, and stir-fry together.
Add soybean paste and chili paste, stir-fry, then pour in water.
Cover with a lid and simmer over medium heat for 10 minutes.
Season with soy sauce and salt to taste.
Serve in a bowl.