Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. 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 bread, onion, pepper, salt, and butter.
Insert the stuffing into the duck and sew it up completely.
Roast and serve
Roast the duck in a preheated oven at 400°F (200°C) for about 1 hour, basting frequently.
A few minutes before serving, dredge the duck lightly with flour to make it froth and look plump.
Serve hot with a good brown gravy poured over the duck, 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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Bread + peastop 11% of all pairsSmell alikemoderateCooked together804 recipes
Shared aroma: hexyl acetate (fruity, apple).
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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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + peastop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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
- Provides the main meat and fat that renders and browns during roasting.
- Bread
- Forms the body of the stuffing and absorbs juices from the bird.
- Butter
- Adds richness and fat that promotes browning and a flavorful stuffing.
- Flour
- Dredged on the surface to help the skin froth and look plump.
The step that matters
Dredge the duck with flour just before serving. Flour applied shortly before serving gives the skin a crisp, frothy surface; applied too early it can absorb moisture and turn pasty.
Swap the peas
The recipe marks peas as optional. How well each one fits the dish's main ingredients (bread, onion, pepper, butter, flour, currant):
- Chestnutfits better
- Almondfits better
- Beansfits better
- Peasthe original
Fit is the average pairing score against bread, onion, pepper, butter, flour, 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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