Why it works: Butter and sugar are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 98,233 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Butter Filling for Sponge Cake
Ingredients
Directions
In a saucepan, combine the butter, boiling water, and sugar.
Boil the mixture until it thickens.
Remove from heat and beat until smooth.
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 + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds richness and a smooth, silky texture to the filling.
- Sugar
- Sweetens the filling and, as it dissolves and cooks, thickens it into a spreadable consistency.
The step that matters
Boil the mixture until it thickens. Sugar and butter thicken as the mixture boils and water evaporates. Stop too early and the filling stays runny; cook too long and it sets stiff and grainy as it cools.
“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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