Why it works: Celery and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 16,012 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Celery Soup
Ingredients
Directions
Prepare the celery
Scrape and cut the celery into 1-inch lengths.
Cook the celery in a little hot water for 15 minutes, then drain.
Make the soup
Add the stock and onion, and stew gently until the celery is very soft.
Pulp the mixture through a colander into the soup.
Season the soup and return it to the heat.
Bring to a boil, then stir in the sugar.
Pour into a tureen and add 1 cup of boiling milk thickened with the flour.
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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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- Celery
- Provides the main flavour and, once softened and pulped, the body of the soup.
- Flour
- Thickens the boiling milk so it gives the soup a smooth, slightly thicker body.
- Milk
- Adds richness and a creamy texture to the finished soup.
- Soup stock
- Forms the liquid base of the soup and carries the celery flavour.
The step that matters
Adding the flour-and-milk mixture to boiling milk. Flour mixed with cold milk and whisked into boiling milk disperses evenly; if poured in lumps or added to cold liquid it can clump and leave the soup grainy.
Swap the onion
How well each one fits the dish's main ingredients (celery, milk, pepper, sugar, flour):
- Capsicumfits better
- Carrotfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against celery, milk, pepper, sugar, 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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