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 ↓
Drawn Butter or Sauce for Fish
Ingredients
Directions
Prepare
Chop the hard-boiled egg and place it in a sauce tureen.
In a bowl, mix the butter, flour, and salt until creamy.
Gradually moisten the mixture with hot water.
Make the sauce
Add the mixture to the saucepan with the remaining boiling water over heat.
Cook until the sauce thickens smoothly.
Serve
Pour the sauce over the chopped egg.
Stir gently.
Garnish with small bits of parsley.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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).
-
Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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 rich fat base that carries the sauce's flavour and smooth mouthfeel.
- Flour
- Thickens the melted butter and water into a smooth, cohesive sauce as its starch swells when heated.
- Hard-boiled egg
- Adds body and savoury richness as the chopped egg is folded into the sauce.
The step that matters
Cook until the sauce thickens smoothly. Flour must be fully dispersed before heating; if lumps form or the sauce is undercooked, the starch will not thicken evenly and the sauce will taste raw and pasty.
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour, egg, milk):
- Nutmegfits better
- Cinnamonfits better
- Capersfits about as well
- Parsleythe original
Fit is the average pairing score against butter, flour, egg, milk. 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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