PREPARATION 30 min:
Clean the orange-lacquered duck breast, removing the small feathers that remain attached to the skin with kitchen tweezers. Cut the breasts on the skin side, making 3 diagonal cuts and 4 transversal cuts to create diamonds. Place them on the cut side in a very hot non-stick pan and cook for 3 minutes so that a golden crust forms; then turn them over and let them brown on the other side for another 3 minutes: the duck will cook with its own fat released during cooking. When the breasts are ready, place them with the skin facing upwards on a baking tray, which you can line with baking paper. Pour in the liquid formed during cooking and season with salt. Put the orange marmalade in a small bowl and then brush the skin of the breasts, covering them evenly. With the back of a knife, crush the juniper berries, pressing with your hands; season the breasts with the berries, the rosemary leaves, the oil and finally pour the water on the bottom of the pan. Cover with aluminum foil and cook in a static oven preheated to 160° for 30-40 min (or at 130° for 20-30 min if in a fan oven).
In the meantime, prepare the potatoes: wash the new potatoes under plenty of fresh running water. Using a knife or a mandolin, cut them into 2-3 mm thick slices without removing the peel, placing them in a container with water as you cut them to prevent them from blackening. Once finished, brown a peeled clove of garlic with a drizzle of oil in a non-stick pan, then drain the potatoes and dry them with a clean cloth. When the garlic has browned, place the sliced potatoes on the stove and cook over medium heat for 15 minutes. Add a few rosemary leaves to flavor and season with salt. Once ready, remove the garlic. After 30-35 minutes, check the cooking of the meat by cutting the heart of the breast with a knife or checking with a probe: in this case, the temperature should be 71°; if it turns out to be lower, leave the duck in the oven and check again after 5-10 minutes. Once ready, remove from the oven and plate: serve your orange-lacquered duck breast, accompanied by the new potatoes you have prepared and a few slices or segments of orange.