Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 27,047 recipes mention both. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Oyster Soup
Ingredients
Directions
Prepare
Remove the gills from the oysters and set them aside.
Pass the oyster liquor through a sieve into a saucepan and heat it.
Make the soup
Beat the egg yolks and stir them into the heated liquor with the cream.
Add water or milk to reach the desired consistency.
Season with pepper, grated lemon peel, and the anchovy mixed with butter and arrowroot.
Five minutes before serving, add the oysters.
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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Pepper + lemontop 3% of all pairsAroma overlapstrongMentioned together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Milk + buttertop 7% of all pairsAroma overlapmoderateMentioned together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Oyster + anchovytop 8% of all pairsAroma overlapmoderateMentioned together603 recipes
Shared aroma: decanal (soap, orange peel).
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Cream + buttertop 8% of all pairsAroma overlapmoderateMentioned together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Egg + anchovytop 12% of all pairsAroma overlapmoderateMentioned together2,330 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oysters
- Provide the main briny flavour and tender bite of the soup.
- Cream
- Adds richness and a smooth, velvety mouthfeel to the broth.
- Egg yolks
- Thicken the soup gently as they heat, adding body and richness.
- Anchovy
- Adds savoury depth that complements the oysters without tasting fishy.
- Arrowroot
- Thickens the liquid when heated, giving a smoother, glossier consistency.
The step that matters
Stirring the egg yolks into the hot liquor. Egg yolks begin to set around 65–70°C and curdle if they get too hot or are added without mixing. Temper them with a little warm liquid first, stir constantly, and keep the soup below a simmer.
“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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