Why it works: Onion and rice are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 10,433 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Stewed Duck
Ingredients
Directions
Prepare
Draw and prepare the duck as for roasting.
Melt the butter in a stewpan.
Chop the bacon finely and add it to the butter.
Brown the duck
Lay the duck in the pan, breast downwards.
Fry gently until the breast is pale brown.
Turn the duck over and brown the back and sides.
Stew
Add the bunch of herbs, onion, cayenne, salt, brown stock, and bovril.
Simmer gently until cooked through.
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.
Photo for illustrative purposes only · Contact us to use it
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 + ricetop 9% of all pairsSmell alikemoderateCooked together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Rice + peppertop 12% of all pairsSmell alikemoderateCooked together8,379 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Duck
- Forms the main body of the dish, becoming tender as it stews slowly.
- Fat bacon
- Adds fat and savoury flavour that enriches the pan and the cooking liquid.
- Butter
- Carries heat and adds richness, helping the duck take on colour when browned.
- Brown gravy
- Provides the liquid that keeps the duck moist as it simmers.
- Rice flour
- Thickens the cooking liquid into a smoother, more clinging gravy.
- Onion
- Adds aromatic sweetness that builds depth into the stewing liquid.
The step that matters
Browning the duck before simmering. Frying the breast and back gently until pale brown renders fat and starts Maillard browning, building colour and flavour that the simmered gravy then carries. Skipping or rushing this leaves the sauce flat.
Swap the onion
How well each one fits the dish's main ingredients (butter, rice, flour, pepper):
- Okrafits better
- Capsicumfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against butter, rice, flour, pepper. 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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