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 ↓
Cream of Potato Soup
Ingredients
Directions
Prepare the base
Cook potatoes and onion in boiling salted water until soft, using as little water as possible.
Mash the potatoes and add them to the scalded milk.
Finish and serve
Cream butter with flour, salt, and pepper, then stir this mixture into the boiling soup.
Cook for 2 minutes, sprinkle with parsley, and 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.
Photo for illustrative purposes only · Contact us to use it
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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Break down into starch that gives the soup its body and thickness.
- Flour
- Thickens the soup when cooked with butter, giving it a smooth, creamy body.
- Butter
- Adds richness and a smooth mouthfeel to the finished soup.
- Milk
- Forms the creamy liquid base and adds softness and mild sweetness.
The step that matters
Adding the butter and flour mixture. Stirring the creamed butter and flour into boiling soup lets the starch thicken evenly. Adding it to a cooler liquid or without enough stirring can leave lumps.
Swap the onion
How well each one fits the dish's main ingredients (potato, flour, milk, pepper, butter, parsley):
- Carrotfits better
- Chivefits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against potato, flour, milk, pepper, butter, 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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