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
Prepare the celery
Wash the celery and break the stalks into 1-inch pieces.
Boil the celery in a small amount of water until pulpy.
Mash the cooked celery in the water it was boiled in and strain through a sieve.
Make the soup
In a double boiler, heat the milk with the onion and mace.
Once the milk boils, add it to the mashed celery.
Cream together the butter and flour, then add to the soup.
Season with salt and pepper.
Add the cream just before serving to enhance the flavor.
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).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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 mashed, the body of the soup.
- Milk
- Forms the creamy liquid base of the soup and adds richness.
- Butter
- Adds fat and flavor, and helps the flour cook into a smooth thickener.
- Flour
- Thickens the soup so it becomes smooth and velvety rather than watery.
- Cream
- Adds fat and richness to the finished soup for a smoother mouthfeel.
The step that matters
Add the flour and butter mixture smoothly. Flour must be fully blended with butter before it goes into hot liquid, otherwise it clumps instead of thickening the soup evenly. Cooking it briefly also removes raw starch taste.
Swap the mace
How well each one fits the dish's main ingredients (celery, milk, onion, butter, flour, pepper, cream):
- Parsleyfits better
- Nutmegfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against celery, milk, onion, butter, flour, pepper, cream. 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