Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Mushroom Sauce
Ingredients
Directions
Prepare the mushrooms
Simmer canned mushrooms for 5 minutes; if using fresh, simmer for 10 minutes.
Cut up any large mushrooms.
Make the sauce
Beat the butter until creamy.
Mix in the flour until light and creamy.
Add salt, pepper, and onion juice.
Beat a little longer.
Pour the hot milk into the mixture.
Add the parsley.
Place the saucepan on the stove.
Stir until the sauce boils.
Cook for 2 minutes.
Remove the parsley.
Serve.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds fat and richness, and helps form a smooth base with the flour.
- Flour
- Thickens the sauce as it cooks with the milk, giving it body.
- Milk
- Forms the liquid base of the sauce, which thickens as it heats.
- Mushrooms
- Provide the main flavor and texture of the sauce.
The step that matters
Stir until the sauce boils. Flour thickens liquid only once it heats enough for its starch to swell. Stirring keeps the mixture smooth and prevents lumps from forming on the bottom of the pan.
Swap the onion
How well each one fits the dish's main ingredients (mushroom, butter, flour, pepper, parsley, milk):
- Shallotfits better
- Potatofits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against mushroom, butter, flour, pepper, parsley, milk. 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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