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 ↓
Salmon Soup
Ingredients
Directions
Prepare the salmon
Cover the salmon with boiling water and simmer for 15 minutes.
Remove the skin and bones, then mash the salmon through a colander.
Make the soup
In a pot, bring the milk and veal stock to a boil.
Stir in the flour mixed with butter until thickened.
Add the mashed salmon and heat until it reaches a boil again.
Season with salt and pepper to taste.
Flavor option
If you don't have stock, use more milk and boil with onion, bay leaf, and parsley for flavor.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter 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
- Salmon
- Provides the main body and flavor of the soup.
- Milk
- Forms the creamy liquid base of the soup.
- Veal stock
- Adds savory depth to the liquid base.
- Flour
- Thickens the liquid into a smooth soup body.
- Butter
- Mixed with flour to help it thicken the soup smoothly and add richness.
The step that matters
Stirring the flour and butter into the boiling liquid. Flour clumps if dropped in raw, so mixing it with butter first and stirring as it goes helps it disperse evenly. Stirring while the liquid heats lets the starch swell and thicken the soup smoothly.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (salmon, milk, veal, flour, butter, pepper, parsley):
- Potatofits better
- Chivefits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against salmon, milk, veal, flour, butter, pepper, parsley. 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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