Wash the cabbage and mushrooms thoroughly and cut them into bite-sized pieces.
Cut the pork shoulder into bite-sized pieces as well.
In a bowl, combine soy sauce, gochujang (Korean red pepper paste), minced garlic, stevia (or sugar), and black pepper. Marinate the pork in this mixture.
Heat cooking oil in a pan and stir-fry the marinated pork.
When the pork is about halfway cooked, add the cabbage and mushrooms and stir-fry together.
When all the ingredients are fully cooked, drizzle with sesame oil and transfer to a serving plate.