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 ↓
Crayfish Soup or Bisque
Ingredients
Directions
Prepare the stock
Wash the crayfish in cold water and place them head first into boiling water.
Add salt, carrot, turnip, onion, parsley, red pepper, and cloves; boil for 20 minutes.
Remove the crayfish and continue boiling the soup.
Once the crayfish are cool enough to handle, break the tails from the bodies and reserve the flesh.
Crush the shells and bodies in a mortar and add them to the soup; boil for 1 hour.
Strain the soup, pressing the solids to extract color and flavor.
Make the bisque
In a separate pot, mix butter and flour over heat until smooth.
Gradually add the strained soup, stirring constantly to avoid lumps.
Add cream and white wine, then stir in the reserved crayfish tails.
Season with salt and cayenne, and serve immediately.
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 + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Turnip + parsleytop 2% of all pairsSmell alikestrongCooked together2,842 recipes
Shared aroma: coumarin (sweet, hay).
-
Pepper + clovetop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Crayfish
- Provide the sweet shellfish flavor in the stock and the tender flesh added at the end.
- Butter
- Enriches the base and carries the flour into a smooth roux for thickening.
- Flour
- Thickens the soup by swelling in the hot butter to form a roux.
- Cream
- Adds richness and a smooth, velvety texture to the finished bisque.
- White wine
- Adds acidity and aromatic brightness that balances the rich cream and butter.
- Onion
- Builds savory depth in the stock as it simmers with the shells.
The step that matters
Stirring the soup into the roux. Adding liquid to a hot butter and flour mixture all at once causes lumps, because starch granules clump before they hydrate. Adding the soup gradually while stirring constantly lets the starch disperse and thicken evenly.
Swap the onion
How well each one fits the dish's main ingredients (crayfish, carrot, turnip, parsley, pepper, clove, butter):
- Parsnipfits better
- Leekfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against crayfish, carrot, turnip, parsley, pepper, clove, butter. 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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