Why it works: Flour and butter 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 ↓
Genoese Pastry
Ingredients
Directions
The book says “a moderately hot oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Break the eggs into a bowl and add the sugar.
Place the bowl over a saucepan of boiling water and whisk until lukewarm.
Remove the bowl and continue whisking until thick and creamy.
Stir in the melted butter and sifted flour as lightly as possible.
Bake
Pour the mixture into a well-buttered and papered tin.
Bake in a moderately hot oven at 350°F (175°C) until golden.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + sugartop 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 + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Flour and butter 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
- Eggs
- Whisked with sugar to trap air, giving the sponge its structure and lift.
- Fine flour
- Provides the starch that sets during baking to give the sponge its body.
- Butter
- Adds richness and a tender crumb, and softens the texture of the sponge.
- Castor sugar
- Sweetens the batter and helps stabilise the whisked egg foam.
The step that matters
Folding in the flour and butter. Stirring too vigorously knocks out the air whisked into the eggs, so the sponge bakes up dense and flat. Stir in the flour and melted butter as lightly as possible to keep the batter airy.
“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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