Why it works: Parsnip and sorrel share more aroma than cooks usually use. They rank in the top 1% of all ingredient pairs, and cooks put them together in 27 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Broth, Fish
Ingredients
Directions
Set water over the fire in a kettle, based on the quantity of broth desired.
Add the roots of parsley, parsnip, whole onions, sweet herbs, parsley, sorrel, and butter.
Season the mixture well.
Add the bones and carcasses of the fish, tripes, pounded tails of crayfish, and onion juice.
Season again and boil the mixture.
Strain through a sieve, return to the kettle, and keep hot to simmer soups and boil fish.
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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Parsnip + sorreltop 1% of all pairsSmell alikestrongCooked together27 recipes
Shared aroma: coumarin (sweet, hay).
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Parsley + parsniptop 1% of all pairsSmell alikestrongCooked together484 recipes
Shared aroma: myristicin (spice, warm).
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Parsley + sorreltop 2% of all pairsSmell alikestrongCooked together234 recipes
Shared aroma: coumarin (sweet, hay).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Parsnip + oniontop 9% of all pairsSmell alikestrongCooked together1,054 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the onion
How well each one fits the dish's main ingredients (parsley, parsnip, sorrel, butter, fish, crayfish):
- Shallotfits better
- Leekfits better
- Turnipfits better
- Onionthe original
Fit is the average pairing score against parsley, parsnip, sorrel, butter, fish, crayfish. Candidates are from the same food group and used in at least 100 recipes.
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