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 ↓
Cream of Celery Soup
Ingredients
Directions
Make the soup base
Cook the celery and onion in hot water until tender.
Rub the mixture through a sieve to remove solids.
Finish the soup
In a separate pan, make a white sauce using the fat and cornstarch.
Gradually add the hot milk and the celery water to the white sauce.
Season with salt and pepper 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.
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.
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + milktop 20% of all pairsSmell alikemoderateCooked together13,418 recipes
Shared aroma: hexanal (green, grassy).
-
Celery + milktop 21% of all pairsSmell alikemoderateCooked together3,491 recipes
Shared aroma: gamma-decalactone (peach, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Celery
- Provides the main flavor and, once strained, the body of the soup.
- Cornstarch
- Thickens the white sauce so the soup becomes creamy.
- Fat
- Forms the roux with cornstarch, carrying flavor and smoothing the sauce.
- Milk
- Adds creaminess and richness to the soup.
- Onion
- Adds savory sweetness and aroma to the cooking liquid.
The step that matters
Gradually add the hot milk and the celery water to the white sauce. Adding liquid slowly while stirring keeps the starch dispersed, preventing lumps and giving a smooth, evenly thickened soup.
Swap the onion
How well each one fits the dish's main ingredients (celery, pepper, milk):
- Carrotfits better
- Capsicumfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against celery, pepper, milk. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Celery Stew25 recipes
Celery Croquettes16 recipes
Celery Cream Soup15 recipes
Celery Seed Infusion10 recipes