At a glance
You're marinating duck breasts overnight to lock in flavor, then searing and slow-cooking them until they're tender and succulent—the trick is finishing with a quick skin crisp for that beautiful contrast. This dish takes patience (mostly hands-off time in the slow cooker), but you'll end up with restaurant-quality duck served alongside creamy sweet potato mash.
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Marinate the duck breasts
Marinate the duck breasts overnight (for at least 12 hours). The marinade couldn't be simpler: just season the duck breasts with white pepper and cover them with a mixture of orange liqueur and water.
For this step
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Add rosemary and oranges
Add sprigs of fresh rosemary to the marinade. Layer orange slices on top.
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Pat the meat dry
Cover with a lid or food-safe cling film and leave in the fridge. The next day, pat the marinated duck breasts dry with a paper towel. Place the slow cooker's inner pot on the stove.