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
In a pot, combine water or fowl liquor and bring to a boil.
Add oysters, salt, and pepper.
In a bowl, mix butter and flour until smooth.
Beat egg yolks and mix with sweet milk and strained oyster liquor.
Finish and serve
Add the egg mixture to the soup and cook for a few minutes.
Pour the soup into a tureen over slices of dry toasted bread and serve hot.
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 + 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).
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Flour + milktop 14% of all pairsAroma overlaplowMentioned together78,219 recipes
Shared aroma: isobutyraldehyde (malty, 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 flavor and the briny taste of the soup.
- Egg yolks
- Thicken the soup and add richness when gently heated.
- Flour
- Thickens the liquid slightly so the soup feels fuller.
- Butter
- Adds richness and a smooth, rounded flavor.
- Sweet milk
- Adds creaminess and softens the sharpness of the oyster liquor.
The step that matters
Adding the egg mixture. Egg yolks thicken at gentle heat but curdle if the soup is too hot or boils after they go in. Keep the heat low and stir steadily while cooking for a few minutes.
“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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