Why it works: Celery and parsley 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 ↓
Family Soups
Ingredients
Directions
Prepare and cook the lentils
Wash the lentils thoroughly.
In a saucepan, combine lentils, water, onion, celery, and parsley; bring to a boil.
Skim well, add peppercorns and mace, and simmer until tender.
Strain and finish
Rub the mixture through a sieve or colander into a basin.
In the saucepan, melt butter, then stir in milk and flour until it boils.
Pour the soup into the saucepan, heat thoroughly, and season 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.
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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Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Lentils + parsleytop 5% of all pairsSmell alikestrongCooked together322 recipes
Shared aroma: coumarin (sweet, hay).
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Lentils + flourtop 5% of all pairsSmell alikestrongCooked together255 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lentils + celerytop 6% of all pairsSmell alikestrongCooked together316 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
- Lentils
- Break down when simmered and rubbed through a sieve, thickening the soup into a smooth body.
- Butter
- Adds fat and richness, carrying flavour and giving the finished soup a silky mouthfeel.
- Flour
- Thickens the milk mixture as it boils, adding body to the finished soup.
- Milk
- Adds creaminess and mild sweetness, softening the savoury lentil flavour.
The step that matters
Rubbing the mixture through a sieve. Pressing cooked lentils through a sieve breaks them into a fine purée that gives the soup its smooth texture. Leaving lumps or skipping this step leaves the soup grainy.
Swap the mace
How well each one fits the dish's main ingredients (lentils, onion, celery, parsley, flour, butter, milk):
- Capersfits better
- Turmericfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against lentils, onion, celery, parsley, flour, butter, 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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