Why it works: Lemon and pepper 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 ↓
Salmi of Game
Ingredients
Directions
Melt and brown the butter in a pan.
Add the flour and stir until browned.
Pour in the stock and stir until it begins to thicken.
Add the cooked duck and mushrooms, stirring gently until heated through.
Stir in the catsup, onion extract, and lemon juice just before serving.
Season with salt and pepper to taste.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 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).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Browns in the pan to add a nutty aroma and fat for the sauce base.
- Flour
- Thickens the stock into a smooth sauce as it cooks with the butter.
- Stock
- Forms the liquid base of the sauce and carries the other flavors.
- Cooked duck
- Provides the main meat and richness in the finished sauce.
- Button mushrooms
- Add earthy flavor and a tender texture to the sauce.
- Catsup
- Adds sweetness and acidity to season the sauce.
The step that matters
Stir in the catsup, onion extract, and lemon juice just before serving.. Acidic and flavoring additions added too early can lose their bright taste under prolonged heat, so they are best stirred in at the end.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, lemon, mushroom, pepper):
- Shallotfits better
- Spinachfits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against butter, flour, lemon, mushroom, 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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