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 ↓
Rich Fruit 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.
Prepare
Preheat the oven to 350°F (175°C).
Make the batter
Beat the butter and sugar together until creamy.
Add the eggs one at a time, mixing well after each addition.
Gradually mix in the flour.
Fold in the orange peel and washed, dried raisins.
Bake
Pour the batter into a prepared cake tin.
Bake for about 1.5 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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Flour + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Raisin + orangetop 13% of all pairsSmell alikemoderateCooked together1,684 recipes
Shared aroma: beta-damascenone (apple, rose).
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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).
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
- Add structure and richness as they set, binding the batter together.
- Flour
- Forms the structure of the cake as its proteins set during baking.
- Castor sugar
- Sweetens the cake and helps create a light texture when creamed with butter.
- Sultana raisins
- Add moisture and chewy sweetness throughout the cake.
The step that matters
Adding the eggs one at a time. Adding eggs gradually lets each one emulsify fully into the creamed butter and sugar. Adding them too fast can make the batter curdle, which can weaken the rise and texture.
Swap the orange
How well each one fits the dish's main ingredients (butter, flour, sugar, raisin, egg):
- Vanillafits better
- Figfits better
- Lemonfits better
- Orangethe original
Fit is the average pairing score against butter, flour, sugar, raisin, egg. 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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