Preheat oven to 150C. Heat half the olive oil in a large frying pan over medium-high heat, add duck skin-side down and cook until golden (3 minutes), then turn and cook until browned (2-3 minutes). Transfer duck to an oven tray and roast until breasts are medium-rare (8-10 minutes). Remove from oven, cover loosely with foil and set aside.
Add remaining oil to pan, increase heat to high, add livers and cook, turning often, until browned (1-2 minutes). Add vinegar, capers and mustard, season to taste and set aside.
Arrange salad leaves on plates, thinly slice duck breasts and arrange over leaves, then spoon over warm livers and dressing. Scatter with parsley and serve immediately.
This recipe is from the July 2012 issue of Australian Gourmet Traveller.