Why it works: Sage and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 5,388 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Roast Duck
Ingredients
Directions
Prepare the stuffing
Slice the onions and chop the sage leaves.
Blanch the onions and sage separately for 5 minutes.
Drain and chop them finely.
In a saucepan, combine the onions, sage, butter, salt, and pepper.
Simmer gently for 10 minutes, stirring with a wooden spoon.
Add the bread crumbs and stir for 2 more minutes.
Roast the duck
Truss the duck and roast it for 20 to 30 minutes over a brisk fire, basting occasionally.
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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Sage + peppertop 3% of all pairsSmell alikestrongCooked together5,388 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Sage + appletop 10% of all pairsSmell alikemoderateCooked together755 recipes
Shared aroma: 2-hexenal (green, leafy).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + sagetop 12% of all pairsSmell alikemoderateCooked together3,628 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Duck
- Provides the main meat and rendered fat that bastes and browns the bird as it roasts.
- Onions
- Add sweetness and moisture to the stuffing as they soften during blanching and simmering.
- Butter
- Adds richness and fat, carrying flavour through the onion and sage mixture.
- Bread crumbs
- Absorb liquid and help bind the stuffing so it holds together.
- Sage leaves
- Contribute aromatic, herbal flavour to the stuffing.
The step that matters
Roasting the duck over a brisk fire. Duck skin holds a thick layer of fat that must render out slowly for crisp skin. Too high a heat can scorch the outside before the fat melts and the meat cooks through, so the bird needs regular basting and close attention.
Swap the apple
The recipe marks apple as optional. How well each one fits the dish's main ingredients (onion, sage, butter, pepper, bread):
- Lemonfits better
- Limefits better
- Avocadofits about as well
- Applethe original
Fit is the average pairing score against onion, sage, butter, pepper, bread. Candidates are from the same food group and used in at least 100 recipes.
“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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