Why it works: Celery and onion are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 18,518 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Roasted Duck
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 400°F (200°C).
Remove the gills from the ducks and place them in a roasting pan.
Roast and serve
Stuff each duck with chopped celery and onion, then remove before serving.
Roast the ducks for 1 hour and 15 minutes, basting every 10 minutes.
Ensure the ducks are cooked through before serving.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Young ducks
- The main protein, whose fat renders during roasting and keeps the meat moist.
- Celery
- Aromatic stuffing that perfumes the bird from inside as it cooks.
- Onion
- Aromatic stuffing that adds savory flavor to the bird's interior.
The step that matters
Ensure the ducks are cooked through before serving. Poultry must reach a fully cooked internal temperature to be safe to eat. Thick areas like the thighs and breast cook more slowly than the rest, so an undercooked centre can remain even when the skin looks well browned. Checking the thickest parts confirms the bird is done.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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