Why it works: Flour and nutmeg are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 18,623 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Butter Sauce
Ingredients
Directions
Beat together sugar, butter, flour, and egg yolk until creamy.
Pour in nearly 1 pint of boiling water and let it boil for 1 minute.
Stir in the beaten egg white.
Season with nutmeg or lemon to taste.
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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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + nutmegtop 16% of all pairsSmell alikemoderateCooked together24,377 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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
- Sugar
- Provides sweetness and body to the sauce.
- Butter
- Adds richness and a smooth, creamy mouthfeel.
- Egg yolk
- Adds richness and helps emulsify and thicken the sauce.
- Egg white
- Adds lightness and helps give the sauce a frothy, airy texture.
The step that matters
Boiling the water into the mixture. Boiling water must be poured in while the creamed mixture is smooth, then kept boiling for a minute. This heat cooks the egg and starch so the sauce thickens instead of staying thin or grainy.
Swap the nutmeg
How well each one fits the dish's main ingredients (sugar, butter, flour, egg):
- Cinnamonfits about as well
- Nutmegthe original
- Jalapenofits less well
- Capersfits less well
Fit is the average pairing score against sugar, butter, flour, egg. 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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