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 ↓
Cream of Green Peas
Ingredients
Directions
Make the puree
Put the green peas and onion slice in a saucepan and cover with boiling water.
Cook until tender.
Remove from heat.
Press through a puree sieve, retaining the cooking liquid.
Return the puree to the saucepan.
Bring to a boil.
Finish the soup
Add the rich milk, salt, white pepper, and cayenne pepper.
In a small bowl, rub the butter into the flour. Add a little of the soup liquid and stir until smooth.
Stir the butter-flour mixture into the soup.
Let it come to a boil.
Stir in the 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).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Peas + oniontop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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
- Green peas
- Provide the main body, flavour and green colour of the soup.
- Rich milk
- Adds creaminess and richness to the soup.
- Butter
- Adds richness and fat, carrying flavour into the soup.
- All-purpose flour
- Thickens the soup as it is heated with the liquid.
- Whipped cream
- Adds lightness and a silky, rich finish when stirred in at the end.
The step that matters
Mixing the butter-flour paste into the soup. Rubbing the butter into the flour and blending it with some hot liquid before adding it helps prevent lumps. Stirring until smooth and then bringing the soup to a boil lets the starch swell and thicken evenly.
Swap the white pepper
How well each one fits the dish's main ingredients (peas, onion, milk, pepper, butter, flour, cream):
- Nutmegfits better
- Parsleyfits better
- Garlicfits better
- White pepperthe original
Fit is the average pairing score against peas, onion, milk, pepper, butter, flour, 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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