I make this dish with roast duck bought from a siu mei (Chinese roast meat ... duck drippings (not to be mistaken for the sweet plum sauce they also give you, but which is not needed for this ...

Reduce the oven temperature to 160C/140 Fan/Gas 3 and slow roast for 2½ hours, basting from time to time. The duck should be tender in the wings and the legs should be easily pulled away from the ...