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
Prepare
Select mushrooms that are dull pearl color on the outside and pale pink underneath.
Wash the mushrooms and remove the stems and outer skins.
For better flavor, salt a few mushrooms the night before to extract their juice.
Make the sauce
Stew the mushrooms slowly in veal gravy, milk, or cream.
Add the chopped onion and season with pepper, salt, and butter rolled in flour.
If any mushrooms are poisonous, the onion will turn black; discard the sauce.
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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Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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
- Button mushrooms
- Form the body of the sauce and release savory flavor as they stew.
- Veal gravy or milk or cream
- Provides the liquid that stews the mushrooms and forms the sauce base.
- Butter
- Adds richness and fat, and with flour helps thicken the sauce.
- All-purpose flour
- Thickens the sauce when rolled into the butter and stirred into the liquid.
- Onion
- Adds aromatic flavor and sweetness to the sauce as it cooks.
The step that matters
Stew the mushrooms slowly. Slow, gentle heat draws out the mushrooms' juices and softens them evenly without toughening or scorching, so the sauce stays smooth and well flavored.
Swap the onion
How well each one fits the dish's main ingredients (mushroom, veal, pepper, butter, flour):
- Shallotfits better
- Capsicumfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against mushroom, veal, pepper, butter, 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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