Wash the cabbage and soybean sprouts thoroughly and cut them into bite-sized pieces.
Cut the duck meat into bite-sized portions.
Place the duck meat in a pan and stir-fry over medium heat to render the fat.
When the duck fat is rendered, add the cabbage and soybean sprouts and stir-fry together.
Season with salt and pepper to taste.
Continue stir-frying until all the ingredients are cooked, then transfer to a plate.