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
Make the soup
Boil the celery pieces in the water for 45 minutes.
In a double boiler, heat the milk with the mace and onion.
Mix the flour with the melted butter until smooth, then add to the boiling milk. Cook for 10 minutes.
Mash the cooked celery in the water and stir it into the boiling milk.
Season with salt and pepper.
Finish and serve
Strain the soup and serve immediately.
If desired, cook a few pieces of celery separately and add them to the soup after straining.
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.
-
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).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Celery
- Provides the main flavour and, once cooked and mashed, body to the soup.
- Milk
- Forms the creamy base of the soup and carries the flavour of the mace and onion.
- Flour
- Thickens the milk as it cooks, giving the soup a smooth, body-rich texture.
- Butter
- Adds richness and fat, and helps the flour blend smoothly into the milk.
The step that matters
Mix the flour with the melted butter until smooth. If the flour is added in lumps, it will not disperse evenly in the hot milk and the soup will be lumpy. Blending it fully into the butter first lets it hydrate and thicken the milk smoothly.
Swap the celery
The recipe marks celery as optional. How well each one fits the dish's main ingredients (milk, mace, onion, flour, butter, pepper):
- Nutmegfits better
- Cinnamonfits better
- Parsleyfits better
- Celerythe original
Fit is the average pairing score against milk, mace, onion, flour, butter, pepper. 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.
More celery soup recipes
You might also like
Celery Stew25 recipes
Celery Croquettes16 recipes
Celery Cream Soup15 recipes
Celery Seed Infusion10 recipesThe 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.