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 ↓
Celery Soup
Ingredients
Directions
Cook the celery
Boil the celery in the water for 40 minutes.
Mash the boiled celery in the water it was cooked in.
Make the milk base
In a separate pot, boil the milk, onion, and nutmeg together.
Add the flour and butter to the milk mixture.
Combine and serve
Combine the mashed celery with the milk mixture.
Strain the mixture.
Serve.
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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Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
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Celery + nutmegtop 7% of all pairsSmell alikestrongCooked together1,331 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Celery
- Provides the main flavour and body of the soup as it is mashed into the liquid.
- Milk
- Forms the creamy base of the soup and adds richness and mild sweetness.
- Flour
- Thickens the milk mixture so the soup becomes smooth and full-bodied.
- Butter
- Adds fat that carries flavour and gives the thickened base a richer mouthfeel.
- Onion
- Contributes savoury aroma and background flavour to the milk base.
The step that matters
Add the flour and butter to the milk mixture. Flour needs fat and heat to thicken smoothly; adding it without stirring or cooking it through can leave lumps and a raw, pasty taste.
Swap the onion
How well each one fits the dish's main ingredients (milk, celery, flour, butter, nutmeg):
- Leekfits better
- Parsnipfits better
- Arrowrootfits better
- Onionthe original
Fit is the average pairing score against milk, celery, flour, butter, nutmeg. 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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