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 ↓
Stewed Duck and Peas
Ingredients
Directions
Prepare the duck
Cut the duck into joints and place it in the gravy.
Season with cayenne, salt, and minced lemon peel; warm through without boiling.
Cook the peas
Boil the peas in salted water until tender, about 15 minutes.
Drain the peas, stir in the powdered sugar and butter, and heat for 2-3 minutes.
Serve
Serve the peas in the center of the dish with the duck arranged around them.
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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Lemon + peastop 11% of all pairsSmell alikemoderateCooked together1,005 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).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Pepper + peastop 15% of all pairsSmell alikemoderateCooked together5,331 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
- Cold roast duck
- Provides the main protein, which is gently warmed in the gravy so it stays tender.
- Gravy
- Adds moisture and savoury depth, keeping the cooked duck from drying out as it warms.
- Butter
- Adds richness and a smooth coating to the peas, giving them a glossy finish.
- Green peas
- Form the central vegetable, cooked until tender and sweetened slightly by the sugar.
The step that matters
Warm through without boiling. Boiling the duck in the gravy can toughen the meat and cause the sauce to break or reduce unevenly. Gentle heat warms the meat through while keeping it moist and the gravy smooth.
Swap the peas
How well each one fits the dish's main ingredients (pepper, lemon, sugar, butter, flour):
- Almondfits better
- Chickpeafits better
- Pistachiofits better
- Peasthe original
Fit is the average pairing score against pepper, lemon, sugar, butter, flour. 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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