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 ↓
Coffee Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Cream the butter and sugar together.
Add the coffee and milk, then the eggs beaten very light.
Sift the baking powder with the flour and add it to the mixture.
Bake
Dredge the fruit in flour and fold it into the batter.
Bake in a moderate oven at 350°F (175°C) with the gas turned down about one-half.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Coffee + milktop 10% of all pairsSmell alikemoderateCooked together2,202 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Raisin + curranttop 10% of all pairsSmell alikelowCooked together6,180 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Creams with sugar to trap air and give the cake a tender, rich crumb.
- Eggs
- Bind the batter and add structure and richness as they set in the oven.
- Flour
- Forms the main structure of the cake as the batter sets during baking.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Currants
- Add chewy texture and fruity sweetness throughout the cake.
- Strong coffee
- Adds moisture and a deep coffee flavour that complements the spices.
The step that matters
Folding the dredged fruit into the batter. Dusting the fruit in flour helps it stay suspended rather than sinking to the bottom during baking. Fold gently so the batter keeps its air and the rising stays even.
Swap the currant
How well each one fits the dish's main ingredients (coffee, butter, sugar, egg, flour, raisin, milk):
- Vanillafits better
- Figfits better
- Coconutfits better
- Currantthe original
Fit is the average pairing score against coffee, butter, sugar, egg, flour, raisin, milk. 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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