Why it works: Cream and butter match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 41,494 recipes mention both. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
The recipe
Ingredients
Contains: milk, wheat, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Make the stock
Place large bones, skin, and coarse pieces of cod in a kettle and cover with cold water.
Boil until done.
Make the bisque
In a separate pot, combine 1 pint of fish stock with 1 cup of cream or milk.
In a small pan, melt 1 tablespoon of butter and stir in 1 tablespoon of flour to create a roux.
Add the roux to the fish stock mixture, then season with salt and pepper.
Finally, add the cooked cod pieces to the bisque.
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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Cream + buttertop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Fish + buttertop 5% of all pairsAroma overlapstrongMentioned together4,432 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Fish + peppertop 10% of all pairsAroma overlapmoderateMentioned together3,899 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + peppertop 11% of all pairsAroma overlapstrongMentioned together85,512 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Butter and flour share little aroma chemistry, yet 122,858 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
- Cod
- Provides the flavour base and the flaked fish texture of the bisque.
- Fish stock
- Forms the liquid base that carries the bisque's savoury, seafood flavour.
- Cream or milk
- Adds richness and body, softening the bisque's texture.
- Butter
- Adds fat and flavour, and forms the base of the roux.
- Flour
- Thickens the bisque by forming a roux with the butter.
The step that matters
Adding the roux to the fish stock mixture. Flour must be cooked in the butter first so it thickens smoothly; if it is added raw or in clumps, it can leave lumps or a pasty taste. Stirring the roux in gradually keeps the bisque smooth.
“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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