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
Melt the butter in a stew-pan until it bubbles.
Add the flour and stir until well combined.
Gradually stir in the stock and mushroom juice, then let the mixture simmer for 1-2 minutes.
Strain the sauce, then add the mushrooms, pepper, salt, and lemon juice.
Serve
Heat thoroughly before serving over meat.
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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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Walnut + lemontop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Walnut + mushroomtop 12% of all pairsSmell alikestrongCooked together763 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Flour
- Thickens the butter and stock into a smooth sauce as its starch swells when heated.
- Butter
- Carries fat flavour and helps form the roux with the flour.
- Strong reduced stock
- Provides the savoury meaty base that gives the sauce its body and flavour.
- Canned mushrooms
- Add mushroom flavour and soft texture to the finished sauce.
The step that matters
Add the flour to the melted butter and stir well. Flour that is not fully stirred into the fat forms lumps that do not smooth out later. Cooking the flour briefly in the butter also removes raw starch taste and helps the sauce thicken evenly.
Swap the walnut
How well each one fits the dish's main ingredients (butter, flour, mushroom, pepper, lemon):
- Chickpeafits better
- Chestnutfits about as well
- Almondfits about as well
- Walnutthe original
Fit is the average pairing score against butter, flour, mushroom, pepper, lemon. 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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