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 ↓
Fruit Cake
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Make the batter
Preheat the oven to 300°F (150°C).
Cream the butter and sugar together until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the sour milk and baking soda.
Gradually add the flour, mixing until just combined.
Fold in the raisins, currants, citron, cloves, cinnamon, and nutmeg.
Bake
Remove 1 cup of batter and set aside.
Pour the remaining batter into a greased cake pan.
Spread the reserved batter over the top of the cake.
Bake for about 3 hours or until a toothpick inserted in the center comes out clean.
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).
-
Raisin + clovetop 9% of all pairsSmell alikemoderateCooked together4,070 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Raisin + curranttop 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).
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
- Bind the batter and add structure and richness as they set in the oven.
- Flour
- Forms the gluten and starch network that gives the cake its structure.
- Butter
- Adds fat for tenderness and flavour, and traps air when creamed with sugar.
- Sugar
- Sweetens the cake and helps create a light, fluffy creamed base.
- Baking soda
- Reacts with the acidic sour milk to produce gas that makes the cake rise.
- Sour milk
- Its acidity activates the baking soda and adds moisture and tenderness.
The step that matters
Bake low and slow until a toothpick comes out clean. A long, low bake lets the dense fruit-filled batter cook through without the outside burning. Testing the centre with a toothpick confirms it is fully set before cooling.
Swap the clove
How well each one fits the dish's main ingredients (sugar, flour, butter, egg, milk, raisin, currant):
- Cinnamonfits better
- Nutmegfits better
- Allspicefits about as well
- Clovethe original
Fit is the average pairing score against sugar, flour, butter, egg, milk, raisin, currant. 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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