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 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat your oven to 350°F (175°C).
Make the batter
Cream the butter and brown sugar together until light and fluffy.
Add the molasses and mix well.
Beat in the eggs one at a time.
Stir in the sour milk and baking soda.
Gradually add the flour, mixing until just combined.
Fold in the currants and raisins.
Bake
Pour the batter into a greased cake pan and bake for about 1 hour or until a toothpick 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).
-
Currant + raisintop 10% of all pairsSmell alikelowCooked together6,180 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
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Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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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
- Eggs
- Bind the batter and add structure as they set during baking.
- All-purpose flour
- Forms the gluten network and sets the crumb structure of the cake.
- Butter
- Adds richness and tenderness, and creaming traps air for a lighter texture.
- Baking soda
- Reacts with the acidic sour milk and molasses to produce gas that lifts the batter.
- Sour milk
- Its acidity activates the baking soda and adds moisture and tang.
- Molasses
- Adds moisture, deep sweetness, and a dark color to the cake.
The step that matters
Stir in the sour milk and baking soda. Baking soda needs an acid to react and produce lift. Once the batter is mixed, the reaction starts, so the batter should go into the pan and the oven promptly to keep the rise.
Swap the currant
How well each one fits the dish's main ingredients (butter, sugar, molasses, egg, milk, flour, raisin):
- Vanillafits better
- Figfits better
- Datesfits about as well
- Currantthe original
Fit is the average pairing score against butter, sugar, molasses, egg, milk, flour, 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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