Start preparing the duck at least 1 day before you plan to serve it; otherwise, the recipe may not turn out properly.
DUCK
Bring a large pot of water (2 L) to a boil.
(OPTIONAL) Using your fingers, gently create a small gap at the bottom of the breast area between the skin and the flesh. Then, using a straw, blow air under the skin as if inflating a balloon so the skin separates from the meat.
Once the water is boiling, set the duck on a rack over the sink. Using a ladle, pour the hot water evenly over the skin (you'll see the skin tighten up—it's pretty fun to watch).
1 whole duck, about 1 kg
In a bowl, mix the five-spice powder, Shaoxing wine, and oyster sauce. Rub the mixture all over the inside of the duck with your hands. Reserve about 1/3 of the mixture.
Stand the duck upright on a plate by carefully lowering it onto the can.
1 sealed can (Coke, beer, Red Bull, etc.)
In a bowl, mix 2 tablespoons of hot water with the vinegar, syrup, and the reserved mixture. Using a brush (or your hands, if needed), coat the entire duck with the glaze. Refrigerate for 30 minutes.
240 ml boiling water, 1 teaspoon rice vinegar, 3 tablespoons syrup (or honey, which is much easier)
Brush the duck with a second coat of glaze, then leave it standing upright in the fridge for 24 hours. If you like, brush the skin 2–3 more times during this period.
1 enough space in the fridge to keep the duck upright
COOKING THE DUCK
Use toothpicks to close the duck's cavity.
Preheat the oven to 180°C.
Place the duck breast-side up directly on the oven rack, with a dish underneath to catch the juices.
Roast for 20 minutes, then turn the duck over and roast for another 15 minutes.
Turn the duck over again, lower the oven temperature to 130°C, and roast for another 50 minutes. For each additional 500 g of duck, add 10 minutes. Every oven is different, so check it regularly.
SYRUP
Combine the water and sugar in a saucepan over high heat.
100 ml water, 100 g granulated sugar
Bring to a boil.
Boil for 1 minute, then transfer to a jar and let cool.
PANCAKES
Combine the flour and boiling water in a large bowl. Let cool.
272 g wheat flour
Knead until the dough is very smooth, then let it rest for 20 minutes.
Divide the dough into 18 balls.
Flatten into discs about 10 cm in diameter.
Brush a pan with a very thin layer of oil. Cook the pancakes on one side until small brown spots appear, then flip and cook the other side.
3 tablespoons vegetable oil
ASSEMBLY
Mix the hoisin sauce with the sesame oil and 1 tablespoon of the duck juices.