Wash the bell pepper, remove seeds, and slice evenly. Clean the radish sprouts and perilla leaves. Rinse the pickled radish slices in cold water and drain.

Place the smoked duck on a microwave-safe plate and heat for 5 minutes.

Lay a pickled radish slice flat, place a perilla leaf on top, followed by sliced bell pepper and radish sprouts.

Add the heated smoked duck on top, fold the perilla leaf first, then wrap the radish slice tightly around the filling.