Preheat your oven to 325 F.
Melt some cooking fat in an oven-proof skillet over medium-high heat.
Season the duck breasts to taste with sea salt and freshly ground black pepper.
Sea salt and freshly ground black pepper, 2 boneless duck breasts
Place the duck breasts in the skillet, skin side down, and brown for 2 to 3 minutes. Remove the entire skillet from the stove and place it in the preheated oven.
Roast the duck in the oven for 8 to 10 minutes for medium rare (or to your desired degree of doneness).
Remove the duck from the skillet, and let rest for 5 to 6 minutes.
While the duck is resting, put the same skillet back over medium heat, and add the garlic and shallot to the rendered fat.
2 garlic cloves, 1 shallot
Cook the garlic and shallot until soft and fragrant, about 2 to 3 minutes.
Pour in the balsamic vinegar and cook until reduced, scraping up the brown bits from the pan.
⅓ cup balsamic vinegar
Add the stock and raspberries to the skillet, and cook until the raspberries are soft and warm.
1 cup chicken or duck stock, 2 cups raspberries, 2 tbsp. ghee
Slice the duck breasts and serve with the raspberry sauce.