Wash, clean and pat dry the duck breast. Slightly cut into the duck breast on the skin side in a diamond shape approx. 1 cm apart and steam in the steamer for approx. 20 minutes. Then pat dry.
Mix together the cornstarch, five-spice powder, soy sauce and water and brush the duck breast with it. Let dry for 20 minutes.
Heat the oil in a high saucepan and fry the duck breast in it for about 2 - 3 minutes until crispy. Then let the fat drip off on kitchen paper. Serve with any side dish.