Cut the duck meat into bite-sized pieces.
Prepare the vegetables, such as green onion, onion, garlic, and carrot.
Sauté the duck meat first in a pan to render the fat.
Add the vegetables and stir-fry together.
Season with soy sauce, gochujang (Korean red pepper paste), sugar, and pepper, then mix well.
Cover with a lid and cook over medium-low heat for 20 minutes.
When the dish becomes glossy and the ingredients are tender, it's ready to serve.