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 ↓
Fish Soup
Ingredients
Directions
Make the stock
Remove all fat from the fish stock and place it in a saucepan.
Add the white peppercorns, onion, turnip, herbs, and carrot.
Boil for 20 minutes, then strain out the vegetables and return the stock to the saucepan.
Thicken and cook the fish
Mix the cornflour smoothly with the milk and stir it into the stock, continuing to stir until it boils.
Cut the fish into dice and add it to the soup, simmering for 10 minutes.
Finish and serve
Just before serving, add a few drops of lemon juice and salt to taste.
Pour into a tureen and sprinkle with chopped parsley.
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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Lemon + parsleytop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Turnip + carrottop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + parsleytop 2% of all pairsSmell alikestrongCooked together2,842 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 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
- Fish stock
- Forms the liquid base that carries the flavour of the whole soup.
- Cornflour
- Thickens the milk and stock into a smooth, lightly body-filled soup as it heats.
- Milk
- Adds richness and a mild creaminess that softens the soup's flavour.
- Fish
- Provides the main protein, cooking gently in the simmering broth until tender.
The step that matters
Stirring the cornflour into the stock. Cornflour mixed into liquid without being blended smoothly first forms lumps, and it must be stirred until it boils to thicken fully and evenly.
Swap the onion
How well each one fits the dish's main ingredients (fish, milk, turnip, carrot, lemon, parsley):
- Parsnipfits better
- Leekfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against fish, milk, turnip, carrot, lemon, parsley. 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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