Tastes even better with a fried egg on top!
Slice the onions and mushrooms.
Add pork to a pan with olive oil and stir-fry.
When the pork is mostly cooked, add mushrooms and stir-fry together.
Once the mushrooms soften, season with oyster sauce, salt, and pepper. Add onions and bean sprouts and stir-fry everything together.
When the bean sprouts have slightly wilted, transfer to a plate and enjoy.