Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Drawn Butter or Egg Sauce
Ingredients
Directions
Make the sauce
Bring the water to a boil in a saucepan.
In a bowl, mix the butter with the flour until smooth.
Stir the butter-flour mixture into the boiling water.
Let it boil for a few minutes, stirring constantly.
Finish and serve
Season with salt and parsley if desired.
For egg sauce, add the chopped hard-boiled eggs to the sauce before serving.
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 their aromas overlap, and how often cooks already put them together.
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Provides fat and richness, and carries flavour through the sauce.
- Flour
- Thickens the butter and water into a smooth, pourable sauce.
- Water
- Forms the liquid base that the butter and flour thicken.
- Hard boiled eggs
- Add texture and body when chopped into the sauce for egg sauce.
The step that matters
Mixing the butter and flour into the boiling water. Stirring constantly while the mixture boils keeps the flour dispersed and starch swelling evenly, which prevents lumps and gives a smooth, thickened sauce.
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour, egg, sauce):
- Capersfits better
- Jalapenofits better
- Nutmegfits better
- Parsleythe original
Fit is the average pairing score against butter, flour, egg, sauce. 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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