Why it works: Milk and fish are a kitchen classic. They rank in the top 13% of all ingredient pairs, and 1,432 recipes mention both. Both carry 4-heptenal, which smells creamy, biscuit. The science ↓
Oyster Soup
Ingredients
Directions
Prepare the roots
Soak prepared roots in cold water for 1 hour.
Slice enough roots to make 1 quart and cook in 1 quart of water.
Boil slowly for 2 hours until very tender.
If desired, add salt cod fish while cooking and remove when roots are tender.
Finish the soup
Add milk, cream, and salt to the pot.
Mix flour with a little milk to make a paste, then add to the boiling soup.
Boil for a few minutes until thickened, then serve.
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 aroma chemistry they share, and how many recipes mention both.
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Milk + fishtop 13% of all pairsAroma overlapmoderateMentioned together1,432 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Milk + flourtop 14% of all pairsAroma overlaplowMentioned together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + creamtop 18% of all pairsAroma overlapmoderateMentioned together29,399 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cream + flourtop 20% of all pairsAroma overlapmoderateMentioned together30,481 recipes
Shared aroma: acetaldehyde (pungent, ethereal).
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Cream + fishtop 24% of all pairsAroma overlaplowMentioned together937 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
Milk and flour share little aroma chemistry, yet 78,219 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Prepared roots
- Form the body of the soup and, when cooked until very tender, give it its substance.
- Milk
- Adds creamy body and mild sweetness to the broth.
- Cream
- Adds richness and a smoother, silkier mouthfeel.
- Flour
- Thickens the soup as it boils, giving it body.
The step that matters
Mix flour with milk into a paste before adding. Flour dropped straight into hot liquid clumps, because the outside of each grain hydrates before the inside. Mixing it into a smooth paste with a little cold milk first spreads the starch evenly so the soup thickens smoothly.
“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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