Why it works: Milk and butter 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 with Whipped Cream
Ingredients
Directions
Prepare the peas
Boil the peas until very soft.
Mash the peas through a colander.
Make the soup
In a double boiler, bring the milk to a boil.
In a separate bowl, rub the butter and flour together until smooth.
Add the butter‑flour mixture to the boiling milk.
Stir in the mashed peas.
Boil for an additional 15 minutes.
Stir in the chopped parsley.
Serve
Serve in cups topped with whipped cream.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Flour + buttertop 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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Peas + parsleytop 13% of all pairsSmell alikemoderateCooked together1,885 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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
- Fresh green peas
- Provide the main body and flavour of the soup once mashed.
- Milk
- Forms the liquid base and gives the soup a creamy, smooth body.
- Flour
- Thickens the milk as it heats, giving the soup a fuller texture.
- Butter
- Adds richness and fat, smoothing the flour and adding flavour.
The step that matters
Adding the butter‑flour mixture to the boiling milk. Flour clumps if dropped into hot liquid unevenly. Rubbing it smooth with butter first and adding it while the milk is boiling and stirred helps it disperse and thicken evenly without lumps.
Swap the peas
How well each one fits the dish's main ingredients (milk, flour, butter, parsley, cream):
- Almondfits better
- Pistachiofits better
- Chestnutfits better
- Peasthe original
Fit is the average pairing score against milk, flour, butter, parsley, cream. 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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