Wash the napa cabbage thoroughly and cut it into bite-sized pieces.
Slice the smoked duck into bite-sized pieces.
Julienne the onion and carrot.
Place the napa cabbage on the bottom of a pot, then layer the onion and carrot on top.
Add the smoked duck on top of the vegetables.
Sprinkle soy sauce, minced garlic, ground black pepper, and sesame oil evenly over the ingredients.
Cover with a lid and steam over medium-low heat for 10 minutes.
When done, garnish with chopped green onion and sesame seeds to finish.