Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and 41,516 recipes mention both. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Espagnole, or Brown Sauce
Ingredients
Directions
Make the roux
Melt the butter in a bain-marie or milk saucepan.
Stir in the flour that has been dried in the oven.
Keep stirring until the mixture is a bright chestnut color.
Make the sauce
Slowly add broth to achieve a thin cream consistency.
Let it simmer for hours, skimming as needed, and ensure it doesn't stick to the sides or bottom.
When thickened to a cream consistency, pass through a tamis and store in a jar.
Add a small piece of butter to prevent a skin from forming.
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 aroma chemistry they share, and how many recipes mention both.
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Butter + creamtop 8% of all pairsAroma overlapmoderateMentioned together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sauce + creamtop 9% of all pairsAroma overlapmoderateMentioned together4,787 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + flourtop 12% of all pairsAroma overlaplowMentioned together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + saucetop 15% of all pairsAroma overlaplowMentioned together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Flour + saucetop 18% of all pairsAroma overlapmoderateMentioned together8,078 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Butter
- Forms the fat base of the roux and adds richness to the finished sauce.
- Flour
- Thickens the sauce as its starch swells in the broth, and toasting it deepens the color.
- Broth
- Supplies the liquid that turns the roux into a sauce and carries its savory flavor.
The step that matters
Keep stirring the roux until it is a bright chestnut color. Flour thickens best when cooked, and cooking it further browns it and builds flavor. Stopping too early leaves a raw, pasty taste, while cooking too long or unevenly can scorch it and make the sauce bitter.
“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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