Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,057 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓
Celery Sauce
Ingredients
Directions
Prepare
Strip the outer parts of the celery stems and wash the remaining portion.
Cut the celery into 2‑inch pieces.
Make the sauce
In a stewpan, sweat the onion, parsley, thyme, and ham (if using) in butter until the onion is done.
Stir in the flour to thicken the sauce, then gradually mix in the broth the celery was boiled in and the boiling milk.
Let it boil for 20 minutes, then strain through a fine sieve.
Finish
Add the celery back in, season with salt and sugar, and serve hot.
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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Parsley + thymetop 1% of all pairsSmell alikestrongCooked together9,057 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Celery + thymetop 3% of all pairsSmell alikestrongCooked together3,193 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Onion + thymetop 7% of all pairsSmell alikemoderateCooked together11,171 recipes
Shared aroma: coumarin (sweet, hay).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Carries the aromatics and, with the flour, forms a base that thickens the sauce.
- Flour
- Starch thickens the liquid as it heats, giving the sauce body.
- Onion
- Sweats down to build a mellow, savoury flavour base.
- Broth
- Provides the main savoury liquid that carries the celery flavour into the sauce.
- Milk
- Adds richness and a smooth, creamy mouthfeel.
- Celery
- Supplies the main vegetable flavour and fine texture once returned to the sauce.
The step that matters
Adding the broth and milk to the flour. Flour clumps when it meets liquid unevenly. Adding the hot liquid gradually while stirring lets the starch disperse and gelatinize smoothly, so the sauce thickens without lumps.
Swap the onion
How well each one fits the dish's main ingredients (celery, parsley, thyme, ham, butter, flour, milk):
- Carrotfits better
- Leekfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against celery, parsley, thyme, ham, 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.
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