Why it works: Parsley and celery match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Cream of Cauliflower Soup
Ingredients
Directions
Prepare the cauliflower
Soak the cauliflower in cold salted water, head down, for 1 hour to remove insects.
In a pot, boil the stock or hot water with the onion, parsley, and celery.
Once tender, mash the cauliflower through a sieve or potato ricer.
Make the soup
In a separate saucepan, melt the butter, then stir in the flour and cook for 1 minute.
Gradually add the milk, salt, and pepper, cooking for 10 minutes until thickened.
Stir in the cauliflower pulp and cook for an additional 5 minutes.
Add the cream and mix well before serving.
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.
-
Parsley + celerytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Cauliflower + parsleytop 5% of all pairsSmell alikestrongCooked together233 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Cauliflower + celerytop 6% of all pairsSmell alikemoderateCooked together488 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cauliflower
- Forms the main body of the soup and gives it a thick, smooth texture when mashed.
- Butter
- Provides fat and rich flavour as the base for the roux.
- Flour
- Thickens the milk into a smooth white sauce when cooked with butter.
- Milk
- Forms the creamy liquid that thickens with the roux and gives body to the soup.
- Cream
- Adds richness and a silky mouthfeel at the end of cooking.
The step that matters
Gradually add the milk to the roux. Adding cold milk all at once to the hot butter and flour can cause lumps. Adding it slowly while stirring lets the starch disperse evenly, giving a smooth sauce as it thickens.
Swap the cauliflower
How well each one fits the dish's main ingredients (chicken, onion, parsley, celery, butter, flour, milk):
- Potatofits better
- Leekfits better
- Carrotfits better
- Cauliflowerthe original
Fit is the average pairing score against chicken, onion, parsley, celery, butter, flour, 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.

Chicken Broth257 recipes
Chicken Soup156 recipes
Cream of Celery Soup113 recipes
Creamed Chicken89 recipes