Cut the pork tenderloin into bite-sized pieces.
Rinse the bean sprouts thoroughly and drain the water.
Heat oil in a pan and stir-fry the pork tenderloin over high heat.
When the pork is halfway cooked, add the bean sprouts and continue stir-frying together.
Season with salt and pepper.
Once the bean sprouts are slightly wilted, turn off the heat and transfer to a plate.