Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Gravy for Ducks
Ingredients
Directions
Boil the giblets and chop them up.
Add some of the gravy from the ducks, salt, and pepper to taste.
Thicken the mixture with a little flour.
Garnish with thin slices of lemon and currant jelly.
If you do not parboil the ducks, stuff them with tart apples.
The apples will absorb the strong flavor and should not be eaten.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Currant + appletop 12% of all pairsSmell alikelowCooked together1,918 recipes
Shared aroma: isoamyl acetate (banana, pear).
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Lemon + appletop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + appletop 18% of all pairsSmell alikemoderateCooked together3,026 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the currant
How well each one fits the dish's main ingredients (pepper, flour, lemon, apple):
- Limefits better
- Orangefits better
- Mangofits better
- Currantthe original
Fit is the average pairing score against pepper, flour, lemon, apple. Candidates are from the same food group and used in at least 100 recipes.
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