Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
A Good Vegetable Soup Maigre
Ingredients
Directions
Prepare the vegetables
Melt the butter in a stewpan over low heat.
Slice the onion, turnip, carrot, and celery.
Add the sliced vegetables to the pan with the shredded spinach and parsley.
Toss the vegetables for 10 minutes.
Make the soup
Add boiling water and the toasted bread.
Simmer for 1 hour.
Rub the mixture through a tamis.
Finish and serve
Dice the boiled turnips and carrots.
Add the diced turnips and carrots to the soup.
Season with salt, pepper, Cayenne, and pounded mace.
Simmer gently for 15 minutes.
Before serving, add white wine or mushroom ketchup.
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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Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Carrot + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
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Turnip + carrottop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
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Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Turnip + spinachtop 1% of all pairsSmell alikestrongCooked together320 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Melts to coat the vegetables and carry their flavour into the soup.
- Onion
- Softens as it cooks, adding sweetness and savoury depth to the base.
- Celery
- Adds aromatic flavour and body as it softens in the butter.
- Toasted bread
- Thickens the soup slightly as it breaks down with the simmering liquid.
- Spinach
- Adds green colour and a mild, earthy flavour along with some body.
The step that matters
Rub the mixture through a tamis. Pressing the cooked soup through a fine sieve breaks down fibres and removes solids, giving a smooth texture. Pressing too hard or skipping it leaves the soup grainy.
Swap the onion
How well each one fits the dish's main ingredients (butter, turnip, carrot, celery, spinach, parsley, bread):
- Leekfits better
- Parsnipfits better
- Lettucefits better
- Onionthe original
Fit is the average pairing score against butter, turnip, carrot, celery, spinach, parsley, bread. 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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