Peking duck seed and strain is a cooking technique used to prepare duck for the classic Chinese dish, Peking duck. The “seed” refers to the initial seasoning and flavoring of the duck, often with a spice rub or marinade, while the “strain” involves hanging or air-drying the duck to tighten the skin and remove excess moisture, which is essential for achieving the signature crispy skin. This method works because it combines flavor infusion with a dry surface, allowing the skin to render and crisp up beautifully during roasting.
Ingredients
- 1 whole duck (about 5 lb / 2.3 kg), cleaned and patted dry
- 1 tablespoon (15 ml) Chinese five-spice powder
- 1 tablespoon (15 g) kosher salt
- 1 teaspoon (5 g) white pepper
- 2 tablespoons (30 ml) soy sauce
- 2 tablespoons (30 ml) hoisin sauce
- 1 tablespoon (15 ml) honey
- 1 tablespoon (15 ml) rice vinegar
- 2 cloves garlic, minced
- 1 tablespoon (15 g) grated fresh ginger
- 2 cups (475 ml) boiling water (for blanching)
- 1 tablespoon (15 ml) maltose or corn syrup (for skin coating)
- 1 tablespoon (15 ml) hot water (to dissolve maltose)
Instructions
- Prepare the seed (seasoning): In a small bowl, mix the five-spice powder, salt, white pepper, soy sauce, hoisin sauce, honey, rice vinegar, garlic, and ginger to form a paste. Rub this mixture all over the duck, inside and out, making sure to get into the cavity and under the skin where possible. Cover and refrigerate for at least 4 hours, preferably overnight (up to 24 hours) to let the flavors penetrate.
- Blanch the duck: Remove the duck from the refrigerator and let it sit at room temperature for 30 minutes. Bring a large pot of water to a rolling boil. Carefully lower the duck into the boiling water, breast side down, for 1 minute. This tightens the skin and helps it crisp later. Remove the duck and pat it dry thoroughly with paper towels.
- Strain (air-dry): Dissolve the maltose in the hot water to make a syrup. Brush this syrup evenly over the entire duck skin. Place the duck on a wire rack set over a baking sheet. Put the duck in the refrigerator, uncovered, for at least 12 hours, or up to 24 hours, to air-dry. The skin should feel dry and taut before roasting.
- Roast the duck: Preheat your oven to 350°F (175°C). Place the duck on a rack in a roasting pan. Roast for 1 hour to 1 hour 15 minutes, or until the internal temperature in the thickest part of the thigh reaches 165°F (74°C) as checked with a food thermometer (USDA FSIS safe minimum). If the skin is browning too quickly, tent loosely with foil.
- Rest and serve: Remove the duck from the oven and let it rest for 15 minutes before carving. This allows the juices to redistribute. Carve the duck into thin slices, skin and meat together, and serve with pancakes, scallions, and hoisin sauce.
Tips
- Substitutions: If you don’t have maltose, use honey or corn syrup mixed with a little water. For the five-spice powder, you can make a substitute with equal parts ground cinnamon, cloves, fennel seed, star anise, and Sichuan peppercorn.
- Don’t skip the drying: The air-drying step is crucial for crispy skin. If the skin is not dry, the fat won’t render properly and the skin will be chewy. Pat the duck dry with paper towels before applying the maltose syrup.
- Check for doneness: Duck must reach 165°F (74°C) to be safe. Use a meat thermometer inserted into the inner thigh, not touching the bone. Overcooking can dry out the meat, so start checking at 1 hour.
- Common mistake: Don’t skip the blanching step. It helps to remove excess fat and tightens the skin. If you skip it, the skin may not crisp evenly.
Serving Suggestions
Serve the Peking duck with thin Mandarin pancakes, sliced scallions, cucumber strips, and hoisin sauce. Traditionally, the duck is carved tableside, and each piece is wrapped in a pancake with sauce and vegetables. You can also serve the duck with steamed buns or over rice for a simpler meal.
Variations
- Spicy rub: Add 1 teaspoon of chili flakes or a minced fresh chili to the seed mixture for a spicy kick.
- Citrus twist: Add the zest of one orange or tangerine to the marinade for a bright, aromatic flavor.
- Smoked duck: After air-drying, smoke the duck over wood chips at 225°F (107°C) for 1 hour, then finish roasting at 350°F (175°C) until it reaches 165°F (74°C). This adds a deep smoky flavor.
Storage and Reheating
Refrigerate any leftover duck in an airtight container for up to 3 days. To reheat, place the duck pieces on a baking sheet and warm in a 350°F (175°C) oven for 10-15 minutes, or until heated through. The skin may lose some crispness, but it will still be flavorful. You can also use leftover duck in stir-fries or soups.
Frequently Asked Questions
Can I use a duck breast instead of a whole duck? Yes, you can use duck breasts, but the cooking time will be shorter. Sear the breasts skin-side down in a cold pan, then roast at 375°F (190°C) until the internal temperature reaches 165°F (74°C). The seed and strain method can still be applied, but the drying time will be shorter.
What if I don’t have a wire rack? You can use a baking sheet lined with a clean kitchen towel or paper towels to absorb moisture. Just make sure the duck is not sitting in its own juices, or it won’t dry properly.
Can I skip the maltose? Yes, you can substitute honey or corn syrup. Maltose gives a slightly different sheen and crispness, but honey works well. Just be aware that honey may burn faster, so watch the duck closely during roasting.
Why is my duck skin not crispy? The most common reason is insufficient drying. Make sure the duck is thoroughly dried in the refrigerator for at least 12 hours. Also, ensure your oven is hot enough and that you don’t cover the duck with foil during the last 20 minutes of roasting.
Can I prepare the duck ahead of time? Yes, you can season and dry the duck up to 24 hours in advance. After roasting, you can also carve and store the duck in the refrigerator, then reheat as directed.
What is the best way to carve Peking duck? Use a sharp knife and slice the duck thinly, starting from the breast. You want to get thin slices of skin and meat together. For authentic presentation, you can also slice the skin separately and serve it as a crispy topping.
Storage and Reheating
Refrigerate leftover duck within 2 hours of cooking. It will keep for 3-4 days. To reheat, place slices on a baking sheet and warm in a 350°F (175°C) oven for 10-15 minutes, or until hot and crisp. Avoid microwaving, as it will make the skin soggy.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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