Cut the duck meat into bite-sized pieces.
Wash the napa cabbage thoroughly and cut large leaves into manageable pieces.
In a pan, stir-fry the duck meat first to render its fat.
Add the cabbage to the duck fat and stir-fry together over medium-low heat.
Season with salt and pepper.
Cover with a lid and steam on low heat until the cabbage is wilted.
Transfer the finished steamed duck and cabbage to a plate and serve.