Why it works: Mushroom and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Mushroom Sauce
Ingredients
Directions
Make the roux
In a stew pan, heat the butter until hot and browning.
Add the flour and stir until dark brown.
Remove the pan from heat and let it cool slightly.
Stir in the gravy and bring to a boil.
Simmer and finish
Add the pepper, baked apple, and half of the mushrooms.
Let the sauce gently bubble for one hour.
Skim off any oil that rises to the top and strain the sauce into another pan.
Add the remaining mushrooms and 3 more tablespoons of gravy.
If using fresh mushrooms, cut them into small pieces and simmer for 10 minutes before serving.
If using canned mushrooms, cook them whole and simmer for 5 minutes.
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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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Pepper + nutmegtop 7% of all pairsSmell alikestrongCooked together13,015 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, 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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, 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
- Butter
- Browned with the flour to give the sauce a nutty, deeper flavour and colour.
- Flour
- Cooked with the butter to form a roux that thickens the sauce.
- Strained gravy
- Forms the liquid base of the sauce, adding savoury body and flavour.
- Mushrooms
- Add earthy flavour and a meaty texture to the sauce.
- Baked sour apple
- Adds a gentle acidity that balances the rich gravy and butter.
The step that matters
Browning the flour in the butter. Flour must darken evenly in the hot butter; if it burns it turns bitter, and if it is not browned enough the sauce lacks depth of flavour. Stirring constantly and cooling the pan before adding the gravy prevents lumps and scorching.
Swap the apple
How well each one fits the dish's main ingredients (mushroom, pepper, butter, flour, nutmeg):
- Lemonfits better
- Limefits better
- Figfits better
- Applethe original
Fit is the average pairing score against mushroom, pepper, butter, flour, nutmeg. 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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