Duck can be treated like a steak in terms of cooking method - meaning you do not have to cook it well-done like in the case of chicken or turkey. The key to a beautifully cooked duck breast is to cook it skin-side down for most of the time, allowing the fat to render out and leaving the skin crispy. A fruit sauce is a classic companion to duck and this version is inspired by the French “gastrique” – a sauce made with wine, vinegar and sugar, providing a sweet-tart contrast to the rich duck.