Prepare the marinade in advance, stir-fry the duck first to release its fat.
Cut the smoked duck and vegetables into bite-sized pieces.
Heat a pan and add a bit of cooking oil.
Stir-fry the smoked duck over medium heat for 2-3 minutes.
Add vegetables (onion, bell pepper, mushrooms, etc.) and stir-fry together.
Season with salt and pepper.
Once the vegetables are tender, turn off the heat.