Cut the pork into bite-sized pieces.
Wash the bean sprouts thoroughly.
Julienne the onion and green onion.
Heat cooking oil in a pan and stir-fry the pork.
Add soy sauce, minced garlic, sugar, and pepper to season.
Add the onion and green onion and stir-fry.
Add the bean sprouts and stir-fry quickly over high heat.
Finish with a drizzle of sesame oil for aroma.