Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Green Pea Soup
Ingredients
Directions
Make the pea base
Wash the peas and cook them in boiling water until soft.
Mash the peas with the cooking water and strain the mixture.
Add the remaining liquid to the strained peas.
Make the white sauce and finish
Melt the butter, then add the flour.
Cook until thick.
Combine the white sauce with the pea mixture.
Cook until it reaches a creamy consistency.
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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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 + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Peas + milktop 16% of all pairsSmell alikemoderateCooked together1,309 recipes
Shared aroma: hexanal (green, grassy).
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
- Peas
- Form the main body of the soup and give it its green color and flavor.
- Butter
- Adds richness and fat to the sauce, carrying flavor and a smooth mouthfeel.
- Flour
- Thickens the butter and milk mixture into a white sauce that gives body to the soup.
- Milk or cream
- Adds creaminess and moisture, softening the soup's texture once blended with the sauce.
The step that matters
Cook the white sauce until thick. Flour must be cooked in fat until it thickens and loses its raw starchy taste. Undercooked flour leaves a pasty flavor and weak body in the finished soup.
Swap the white pepper
How well each one fits the dish's main ingredients (peas, butter, sugar, flour, milk):
- Cinnamonfits better
- Nutmegfits better
- Gingerfits better
- White pepperthe original
Fit is the average pairing score against peas, butter, sugar, flour, 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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