Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Green Pea Soup
Ingredients
Directions
Boil the shelled peas in 2 quarts of water until tender.
In a bowl, mix the cold milk and flour until smooth.
Add salt, black pepper, and cayenne pepper to the milk mixture.
Stir the milk mixture into the boiling peas.
Continue to boil until the soup thickens and is heated through.
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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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Peas + peppertop 15% of all pairsSmell alikemoderateCooked together5,331 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Peas + milktop 16% of all pairsSmell alikemoderateCooked together1,309 recipes
Shared aroma: hexanal (green, grassy).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Peas + flourtop 21% of all pairsSmell alikelowCooked together2,837 recipes
Shared aroma: isobutyraldehyde (malty, green).
Milk and flour barely smell alike, yet cooks put them together in 78,219 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 peas
- Provide the main body and flavour of the soup.
- All-purpose flour
- Thickens the soup as its starch gelatinises with heat.
- Cold milk
- Adds richness and, combined with the flour, helps build a smooth, creamy texture.
The step that matters
Stirring the milk mixture into the boiling peas. Flour mixed with cold milk disperses without lumps, but if it is added to soup without stirring constantly, the starch can clump. Keep stirring as it goes in so the flour spreads evenly and thickens the soup smoothly.
Swap the peas
How well each one fits the dish's main ingredients (milk, flour, pepper):
- Milletfits better
- Chestnutfits better
- Chickpeafits better
- Peasthe original
Fit is the average pairing score against milk, flour, pepper. 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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