Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Celery Soup
Ingredients
Directions
Make the stock
Place turkey or chicken bones in a pot with cold water and cook until the strength is extracted.
Skim out the bones.
Boil a handful of dried celery tops in 2 cups of water in a separate dish.
Finish the soup
Stir 2 tablespoons of flour and 2 tablespoons of butter over heat in a pan until smooth.
Add the flour mixture and the celery water to the soup.
Season to taste.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Turkey + buttertop 13% of all pairsSmell alikemoderateCooked together1,592 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Turkey + celerytop 14% of all pairsSmell alikemoderateCooked together431 recipes
Shared aroma: myristicin (spice, warm).
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Celery + flourtop 15% of all pairsSmell alikemoderateCooked together6,905 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Turkey + flourtop 22% of all pairsSmell alikemoderateCooked together963 recipes
Shared aroma: eugenol (clove, spicy).
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
- Turkey or chicken bones
- Release flavour and body into the broth as they simmer.
- Dried celery tops
- Add concentrated celery aroma to the water they steep in.
- Flour
- Thickens the soup by swelling in hot liquid once cooked in butter.
- Butter
- Carries flavour and, with flour, forms a roux that thickens the soup.
The step that matters
Stirring the flour and butter until smooth. Cooking flour in fat before adding liquid coats the starch granules so they disperse rather than clump. Lumps form if the roux is added too quickly or not stirred smooth.
Swap the celery
How well each one fits the dish's main ingredients (turkey, flour, butter):
- Sagefits better
- Nutmegfits better
- Thymefits better
- Celerythe original
Fit is the average pairing score against turkey, flour, butter. 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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