Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 81,283 recipes mention both. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Oyster Soup
Ingredients
Directions
Prepare the soup base
Stew the oysters in their own liquor, then strain and keep warm in a soup tureen.
Melt the butter in a saucepan, stir in the flour, and dilute with hot milk and the oyster liquor.
Bring the mixture to a boil, then season with salt and cayenne.
Finish and serve
Mix the cold cream with the egg yolks, then stir this into the soup rapidly.
Heat the soup without boiling, then strain it over the oysters and 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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Butter + milktop 7% of all pairsAroma overlapmoderateMentioned together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsAroma overlapmoderateMentioned together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + flourtop 12% of all pairsAroma overlaplowMentioned together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Oyster + buttertop 12% of all pairsAroma overlapmoderateMentioned together8,184 recipes
Shared aroma: 2,6-nonadienal (cucumber, green).
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Oyster + eggtop 14% of all pairsAroma overlapmoderateMentioned together4,103 recipes
Shared aroma: 2-nonenal (fatty, green).
Butter and flour share little aroma chemistry, yet 124,287 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
- Oysters
- Provide the main flavour and the briny character of the soup.
- Butter
- Adds richness and fat, carrying flavour through the soup.
- Flour
- Thickens the milk base so the soup has body.
- Milk
- Forms the liquid base of the soup, giving it creaminess and mildness.
- Egg yolks
- Enrich and thicken the soup, adding smoothness and body.
- Cold cream
- Adds richness and silkiness to the finished soup.
The step that matters
Adding the egg yolk and cream mixture. Egg yolks can curdle or scramble if the soup is too hot or boiling. Stirring rapidly and heating without boiling keeps the custard-like liaison smooth and evenly thickened.
“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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