01 - Set the oven to 320°F.
02 - Remove excess fat from inside the duck cavity and pat the skin dry with paper towels.
03 - Combine five-spice powder, sea salt, and black pepper, then rub evenly over the entire duck, including inside the cavity.
04 - Fill the duck cavity with crushed garlic, sliced ginger, and scallion pieces.
05 - Place the duck breast-side up on a wire rack set in a roasting pan and roast for 1 hour.
06 - Mix soy sauce, honey, and rice vinegar in a small bowl.
07 - Raise the oven temperature to 430°F. Brush the duck with the honey-soy mixture.
08 - Return the duck to the oven and roast for an additional 20 to 30 minutes, brushing once halfway through, until the skin turns deep golden and crisp.
09 - Remove the duck from the oven and let it rest for 10 minutes before slicing.
10 - Present sliced duck with Mandarin pancakes or steamed buns, julienned cucumber, scallions, and hoisin or plum sauce.