Why it works: Carrot and celery match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,173 recipes. Both carry myristicin, which smells spice, warm. The science ↓
Fish Soup
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Make the broth
In a large pot, combine fish bones and trimmings with water.
Add onion, carrot, celery, bay leaf, salt, and pepper.
Bring to a boil, then reduce heat and simmer for 30 minutes.
Strain the broth and discard solids.
Finish the soup
Return the broth to the pot and add any desired fish meat.
Simmer until the fish is cooked through, about 10 minutes.
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 + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fish bones and trimmings
- Release gelatin and flavor into the water, giving the broth body and a savory base.
- Onion
- Adds aromatic sweetness and depth as it softens and infuses the broth.
- Carrot
- Contributes mild sweetness and body to the simmered broth.
- Celery
- Adds savory, herbal aroma to the broth as it simmers.
The step that matters
Simmer gently rather than boil. A hard boil makes the broth cloudy and can toughen the fish, while a gentle simmer extracts flavor cleanly and cooks the fish through evenly.
Swap the onion
How well each one fits the dish's main ingredients (fish, carrot, celery, pepper):
- Capsicumfits better
- Parsnipfits better
- Turnipfits better
- Onionthe original
Fit is the average pairing score against fish, carrot, celery, pepper. 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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