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 ↓
Cream of Pea Soup
Ingredients
Directions
Prepare the peas
Drain the peas from the can.
Fill the can with cold water and add it to the peas along with the sugar.
Cook the peas until tender.
Mash the cooked peas in the cooking water.
Strain the mixture through a wire strainer.
Make the soup
Scald the milk with the onion.
Add the scalded milk to the strained peas.
Melt the butter in a saucepan.
Add flour and seasoning to the melted butter.
Stir in enough hot milk to create a smooth mixture.
Add the smooth mixture to the soup.
Season the soup to taste.
Remove the onion before serving.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Peas + oniontop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Peas + peppertop 15% of all pairsSmell alikemoderateCooked together5,331 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Peas
- Provide the main body and flavor of the soup once mashed and strained.
- Milk
- Adds creaminess and a smooth, rich texture to the soup.
- Butter
- Adds richness and flavor when melted with the flour base.
- Flour (in the method)
- Thickens the mixture into a smooth base that gives the soup body.
The step that matters
Stir in the hot milk gradually to the butter and flour mixture. Adding liquid slowly while stirring keeps starch granules dispersed, preventing lumps and giving a smooth, thickened base.
Swap the onion
How well each one fits the dish's main ingredients (peas, butter, sugar, pepper, milk):
- Capsicumfits better
- Potatofits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against peas, butter, sugar, pepper, 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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