Clean and prepare the pork belly slices and bean sprouts.
Heat cooking oil in a pan and stir-fry the pork belly slices.
When the meat is half cooked, add minced garlic and onion and stir-fry together.
Add the bean sprouts and quickly stir-fry over high heat.
Season with soy sauce, salt, and pepper.
Add sesame oil and toasted sesame seeds, stir-fry one more time, and finish.