Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Crab Soup
Ingredients
Directions
Make the soup
Melt the butter over medium heat.
Stir in the flour until smoothly mixed.
Gradually add the hot milk and water, stirring until smooth.
Season the soup with salt, white pepper, and cayenne to taste.
Add the crab meat and sherry, then bring the soup to a boil.
Serve
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.
Photo for illustrative purposes only · Contact us to use it
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Crab + buttertop 10% of all pairsSmell alikemoderateCooked together812 recipes
Shared aroma: nonanal (fat, citrus).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Crab + sherrytop 13% of all pairsSmell alikemoderateCooked together67 recipes
Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).
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Butter + sherrytop 14% of all pairsSmell alikemoderateCooked together3,505 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they 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
- Butter
- Melts to form the fat base that the flour cooks into.
- Flour
- Thickens the milk and water into a smooth, body-rich soup.
- Milk
- Forms the creamy base of the soup and adds richness and body.
- Crab meat
- Provides the main flavor and texture of the soup.
- Sherry
- Adds acidity and aromatic depth to the soup.
The step that matters
Stirring in the hot liquid. Adding the hot milk and water gradually while stirring keeps the flour from clumping. Smoothly dispersed starch thickens the soup evenly instead of forming lumps.
Swap the white pepper
How well each one fits the dish's main ingredients (crab, butter, flour, milk, pepper, sherry):
- Cinnamonfits better
- Nutmegfits better
- Parsleyfits better
- White pepperthe original
Fit is the average pairing score against crab, butter, flour, milk, pepper, sherry. Candidates are from the same food group and used in at least 100 recipes.
“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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