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 ↓
Mushroom Sauce
Ingredients
Directions
Make the sauce
In a pot, combine the mushrooms, boiling water, 1 tablespoon of butter, pepper, and salt.
Simmer gently for 10 minutes.
In a separate bowl, mix 1 tablespoon of flour with 1 tablespoon of butter to form a paste.
Stir the paste into the mushroom mixture to thicken.
Add the juice of half a lemon and mix well.
Serve
Serve with roast meats.
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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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mushroom + lemontop 15% of all pairsSmell alikemoderateCooked together4,633 recipes
Shared aroma: 2-nonenal (fatty, green).
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
- Button mushrooms
- Provide the main body and savoury flavour of the sauce as they soften in the liquid.
- Flour
- Thickens the sauce when mixed with butter and stirred into the hot mushroom liquid.
- Butter
- Adds richness and fat, carrying flavour and giving the sauce a smooth mouthfeel.
- Lemon juice
- Adds acidity that brightens the earthy mushroom flavour and balances the richness.
The step that matters
Stirring the flour paste into the mushroom mixture. Flour needs heat and stirring to swell evenly; added in lumps or without enough mixing, it stays grainy. Mixing it with butter first to a paste helps it disperse before it thickens.
Swap the lemon
How well each one fits the dish's main ingredients (mushroom, butter, pepper, flour):
- Lemonthe original
- Plumfits about as well
- Limefits less well
- Cherryfits less well
Fit is the average pairing score against mushroom, butter, pepper, 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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