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 Vegetable Soup
Ingredients
Directions
Make the white sauce
Melt the butter in a saucepan.
Add the flour and stir until frothy.
Gradually add the milk and vegetable water, stirring continuously.
Cook until the mixture thickens, then boil for a few minutes, stirring occasionally.
Finish and serve
Press the vegetables through a sieve and add to the white sauce.
Serve hot in plates.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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
- Butter
- Forms the fat base of the roux that thickens the soup and carries flavour.
- Flour
- Thickens the liquid into a smooth white sauce when cooked with the fat.
- Milk
- Adds creaminess and body to the soup as the base liquid of the white sauce.
- Vegetables
- Provide the main flavour and, once pressed through a sieve, body to the soup.
The step that matters
Adding the milk and vegetable water gradually. Adding liquid slowly while stirring constantly lets the starch in the flour disperse evenly, preventing lumps. Once the mixture has thickened, boiling it briefly cooks out the raw flour taste.
“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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