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 ↓
Hasty Soup
Ingredients
Directions
Blend the butter and flour in a saucepan.
Stir in the boiling milk gradually.
Season with salt, pepper, parsley, and kitchen bouquet.
Chop the salmon finely and add it to the mixture.
Allow the soup to boil once and then 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).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 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
- Adds richness and fat, and helps form the base with the flour.
- Flour
- Thickens the milk into a smooth, creamy body when blended with butter.
- Milk
- Forms the liquid base of the soup, giving it a creamy texture.
- Salmon
- Provides the main protein and flavour of the soup.
The step that matters
Adding the boiling milk gradually. Pouring hot milk in slowly while stirring keeps the flour from clumping, so the butter-flour roux blends into a smooth, even sauce.
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour, milk, pepper, salmon):
- Nutmegfits about as well
- Parsleythe original
- Cinnamonfits about as well
- Capersfits about as well
Fit is the average pairing score against butter, flour, milk, pepper, salmon. 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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