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 ↓
Rich Currant 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 together the butter and sugar.
Add the eggs one or two at a time, mixing slowly to prevent curdling.
Once thoroughly beaten, add the remaining ingredients and mix well.
Bake
Pour the batter into a prepared cake pan.
Bake in a moderate oven at 350°F (175°C) for two to three hours.
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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Currant + rumtop 13% of all pairsSmell alikemoderateCooked together155 recipes
Shared aroma: ethyl cinnamate (sweet, balsamic).
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Butter + rumtop 13% of all pairsSmell alikemoderateCooked together1,007 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Sugar + rumtop 14% of all pairsSmell alikelowCooked together2,908 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- Creamed with sugar to trap air, giving the cake a tender, rich crumb.
- Eggs
- Bind the batter and add structure and richness as the cake sets.
- Flour
- Forms the main structure of the cake as the batter bakes and sets.
- Currants
- Add fruitiness and moisture, and their sugars help the cake brown.
- Castor sugar
- Sweetens the batter and, creamed with butter, helps it hold air.
The step that matters
Adding the eggs gradually. Eggs added too quickly can break the emulsion of butter and sugar, causing curdling. Adding them one or two at a time and mixing slowly keeps the batter smooth and able to hold air.
Swap the currant
How well each one fits the dish's main ingredients (butter, sugar, flour, egg, rum):
- Vanillafits better
- Raisinfits better
- Bananafits better
- Currantthe original
Fit is the average pairing score against butter, sugar, flour, egg, rum. 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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