Wash the napa cabbage, green cabbage, and enoki mushrooms thoroughly and cut them into bite-sized pieces.
Add cooking oil to a pan.
Add the napa cabbage and green cabbage first and stir-fry over medium heat for 2-3 minutes.
Add the enoki mushrooms, season with salt or soy sauce, and stir-fry for another 1-2 minutes.
Finish by sprinkling black pepper to taste.