Why it works: Onion and peas are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 5,460 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Roast Ducks
Ingredients
Directions
Prepare
Wash and dry the ducks carefully.
Make a stuffing with the egg and onion, insert it into the ducks, and sew them up completely.
Roast and serve
Roast the ducks for about 1 hour, basting them well.
A few minutes before serving, dredge the ducks lightly with flour to make them froth and look plump.
Serve hot with a good brown gravy poured over them, accompanied by 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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Onion + peastop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peastop 21% of all pairsSmell alikelowCooked together2,837 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Currant + peastop 21% of all pairsSmell alikelowCooked together78 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
Egg and flour barely smell alike, yet cooks put them together in 106,462 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ducks
- Provide the main protein and fat that cook down and flavour the dish.
- Egg
- Binds the stuffing so it holds together inside the bird.
- Onion
- Adds aromatic sweetness and moisture to the stuffing as it cooks.
- Flour
- Dusted on at the end, it helps the skin froth and look plump.
The step that matters
Dredging the ducks with flour before serving. Flour dusted on too early can become pasty or burn in the oven's heat. Applying it only a few minutes before serving lets it puff and whiten the skin briefly, so the bird looks plump and appealing.
Swap the currant
How well each one fits the dish's main ingredients (egg, onion, flour, peas):
- Avocadofits better
- Pumpkinfits better
- Raisinfits better
- Currantthe original
Fit is the average pairing score against egg, onion, flour, peas. 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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