01 - Set the oven temperature to 350°F.
02 - Pat the duck skin thoroughly dry with paper towels and prick the skin evenly with a sharp fork, avoiding puncturing the meat.
03 - Rub the entire duck, including the cavity, with Chinese five-spice powder, sea salt, and black pepper.
04 - Fill the duck cavity with sliced ginger, spring onions, and smashed garlic cloves.
05 - Place the duck breast side up on a rack set inside a roasting pan.
06 - Roast the duck at 350°F for 1 hour, then carefully drain off excess fat from the pan.
07 - Increase oven temperature to 430°F and continue roasting for an additional 30 minutes, until the skin turns deep golden and crisp.
08 - To make the sauce, whisk together hoisin sauce, soy sauce, honey, and sesame oil in a small bowl.
09 - Let the duck rest for 10 minutes before carving. Serve with the sauce on the side if desired.