Why it works: Sage and onion are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 3,628 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Roast 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
Wash and dry the duck carefully.
Make a stuffing with sage and onion, then insert it into the duck and sew it up to prevent the stuffing from escaping.
Roast and serve
Roast the duck in a 400°F (200°C) oven for about one hour, basting it regularly.
Serve with a good brown gravy poured over the duck.
Accompany with currant jelly and green peas if in season.
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 + oniontop 12% of all pairsSmell alikemoderateCooked together3,628 recipes
Shared aroma: coumarin (sweet, hay).
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Onion + peastop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Sage + peastop 15% of all pairsSmell alikemoderateCooked together204 recipes
Shared aroma: 2-hexenal (green, leafy).
-
Currant + peastop 21% of all pairsSmell alikelowCooked together78 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Sage + curranttop 25% of all pairsSmell alikelowCooked together119 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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 its fat renders during roasting to keep the meat moist and crisp the skin.
- Sage
- Adds a savoury, aromatic flavour to the stuffing that perfumes the meat as it cooks.
- Onion
- Adds savoury sweetness and moisture to the stuffing as it cooks inside the bird.
- Currant jelly
- Adds sweet-tart acidity that balances the rich, fatty flavour of the duck.
The step that matters
Basting the duck regularly. Basting spreads rendered fat and pan juices over the skin, helping it brown and crisp while keeping the surface from drying out during roasting.
Swap the peas
The recipe marks peas as optional. How well each one fits the dish's main ingredients (sage, onion, currant):
- Chestnutfits better
- Beansfits better
- Walnutfits better
- Peasthe original
Fit is the average pairing score against sage, onion, currant. 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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