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, then add the mushrooms.
Sprinkle the mace and cayenne over the mushrooms and stew for 10-15 minutes, stirring often.
Add the flour and stir until lightly browned.
Gradually pour in the gravy or broth and simmer for 2 minutes.
Season with salt and lemon juice.
Fry the bread and serve
Fry the bread in butter until light brown, slightly hollowing it out first.
Serve the mushroom mixture on the toasted 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).
-
Mushroom + beeftop 4% of all pairsSmell alikemoderateCooked together3,232 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
-
Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
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 topping and release moisture as they stew.
- Butter
- Carries the flavour of the dish and browns the bread and mushrooms.
- Flour
- Thickens the cooking liquid into a smooth sauce as it browns lightly.
- Gravy or beef broth
- Supplies the liquid base that becomes the savoury sauce.
- Lemon juice
- Adds acidity that brightens the rich mushroom sauce.
The step that matters
Stirring the flour until lightly browned. Flour must cook long enough to lose its raw taste and thicken evenly, but if it scorches it turns bitter. Stir constantly over moderate heat, then add the liquid gradually to prevent 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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