Cut the cabbage and pork shoulder into bite-sized pieces.
Slice the onion and green onion.
Heat cooking oil in a pan and sauté the green onion to bring out its aroma.
Add the pork shoulder and cook over medium heat.
When the meat is halfway cooked, add the onion and cabbage and stir-fry together.
Season with soy sauce, salt, and black pepper.
Once everything is cooked, turn off the heat and plate the dish.