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 Pea Soup
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the pea base
Combine peas and water in a pot.
Bring to a boil.
Simmer for 10 minutes.
Make the cream
Melt butter over medium heat.
Stir in flour to create a roux.
Gradually add milk to the roux, stirring until thickened.
Combine and serve
Combine pea mixture with milk mixture and blend until smooth.
Season to taste.
Serve hot.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Peas + milktop 16% of all pairsSmell alikemoderateCooked together1,309 recipes
Shared aroma: hexanal (green, grassy).
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Peas + buttertop 16% of all pairsSmell alikemoderateCooked together4,887 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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 and flavor of the soup.
- Flour
- Thickens the milk into a smooth roux that gives the soup body.
- Milk
- Adds creaminess and softens the soup's texture.
- Butter
- Carries the flour in the roux and adds richness.
The step that matters
Cooking the flour into the roux. Flour must be cooked in the melted butter briefly before liquid is added, so it thickens smoothly and does not taste raw. Adding milk gradually while stirring prevents lumps.
Swap the peas
How well each one fits the dish's main ingredients (milk, butter, flour):
- Almondfits better
- Pistachiofits better
- Chestnutfits better
- Peasthe original
Fit is the average pairing score against milk, butter, flour. 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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