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 ↓
Sauce for Bread Pudding
Ingredients
Directions
Make the sauce
In a saucepan, melt the butter and mix in the sugar until combined.
Add the egg yolk and flour, then stir in the boiling water.
Cook over medium heat, stirring constantly, until the sauce thickens.
Remove from heat and let cool slightly.
Finish
Gently fold in the well-beaten egg white without whipping.
Flavor with brandy or sherry 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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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Butter + brandytop 15% of all pairsSmell alikemoderateCooked together5,127 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Adds fat and richness, giving the sauce a smooth, rounded mouthfeel.
- Sugar
- Provides sweetness and adds body to the sauce.
- Egg yolk
- Adds richness and helps thicken the sauce as it heats.
- Flour
- Its starch swells when heated with liquid, thickening the sauce.
The step that matters
Cook over medium heat, stirring constantly, until the sauce thickens. Flour starch swells and thickens only as the mixture heats, and constant stirring keeps it smooth. Stopping early leaves it thin, while stopping late or letting it sit on the heat can cause lumps or scorching.
“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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