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-toast, or Croute Aux Champignons
Ingredients
Directions
Prepare the mushrooms
Cut the stems from the mushrooms, peel them, and remove the gills.
Make the mushroom sauce
Melt the butter in a saucepan over low heat.
Add the mushrooms to the melted butter and sprinkle them with mace and cayenne.
Stir the mushrooms, then stew them for 10-15 minutes.
Add the flour to the mushrooms and stir until lightly browned.
Gradually pour in the gravy or broth and let the mushrooms simmer for 2 minutes.
Season with salt and lemon juice.
Serve on toast
Slightly hollow out the bread.
Fry the bread in butter until light brown.
Pour the mushroom mixture over the fried bread.
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 + beeftop 4% of all pairsSmell alikemoderateCooked together3,232 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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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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Pepper + beeftop 10% of all pairsSmell alikemoderateCooked together18,971 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
What each ingredient does
- Mushrooms
- Form the main body of the dish and release moisture that becomes part of the sauce as they stew.
- Butter
- Carries the mushroom flavour and fries the bread to a golden, rich finish.
- Flour
- Thickens the cooking juices into a smooth sauce as it cooks with the butter.
- Gravy or beef broth
- Provides the liquid base and savoury depth for the mushroom sauce.
- Bread
- Forms the crisp, absorbent base that holds the mushroom sauce.
The step that matters
Stew the mushrooms and brown the flour. Cooking the mushrooms gently until they release and reabsorb their liquid concentrates their flavour. Browning the flour in butter removes raw starch taste and gives the sauce colour and body before the liquid is added, so it thickens smoothly without lumps.
Swap the mace
How well each one fits the dish's main ingredients (mushroom, butter, pepper, flour, beef, lemon, bread):
- Thymefits better
- Parsleyfits better
- Marjoramfits better
- Macethe original
Fit is the average pairing score against mushroom, butter, pepper, flour, beef, lemon, bread. 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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