Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Composition Cake
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Preheat the oven to 300°F (150°C).
Beat the butter and sugar together until creamy.
In a separate bowl, beat the eggs well and stir them into the butter and sugar mixture.
Gradually add the flour and mix until combined.
Add the fruit and bake
Wash, pick, dry, and lightly flour the currants.
Pick and seed the raisins, then lightly flour them.
Shave the citron into very thin bits and add to the mixture.
Pour the batter into a prepared cake pan and bake until done, ensuring the fruit does not scorch.
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 + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Currant + raisintop 10% of all pairsSmell alikelowCooked together6,180 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + raisintop 13% of all pairsSmell alikemoderateCooked together12,481 recipes
Shared aroma: beta-damascenone (apple, rose).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- All-purpose flour
- Builds the crumb structure once its starches set during baking.
- Unsalted butter
- Creamed with sugar to trap air and add richness and tenderness.
- Granulated sugar
- Sweetens the batter and helps it become light when creamed with butter.
- Large eggs
- Bind the batter, add moisture, and set to give the cake its structure.
- Dried currants
- Add concentrated sweetness and chewy moisture throughout the cake.
- Raisins
- Add concentrated sweetness and chewy moisture throughout the cake.
The step that matters
Bake low and check for scorching. A low oven lets the cake set evenly through its middle before the outside browns. Dried fruit and sugar darken quickly at high heat, so the fruit can scorch before the cake is done.
Swap the currant
How well each one fits the dish's main ingredients (flour, butter, sugar, egg, raisin):
- Vanillafits better
- Figfits better
- Lemonfits better
- Currantthe original
Fit is the average pairing score against flour, butter, sugar, egg, raisin. 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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