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 says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 300°F (150°C).
Make the batter
In a large bowl, cream the butter and brown sugar together.
Add the flour, cream of tartar, strong coffee, and eggs, mixing well.
Stir in the baking soda, raisins, currants, dates, citron, orange peel, lemon peel, and spices.
Pour the batter into a greased cake pan.
Bake
Bake for 4 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 + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Raisin + curranttop 10% of all pairsSmell alikelowCooked together6,180 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
-
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 the sugar to add richness and a tender crumb.
- Brown sugar
- Adds sweetness and moisture, and its molasses gives a deeper flavor.
- Flour
- Provides the structure that holds the fruit and batter together.
- Eggs
- Bind the batter and add structure and richness as they set.
- Baking soda
- Reacts with the acidic ingredients to help the cake rise and darken.
- Raisins
- Add moisture, chewiness, and concentrated sweetness throughout the cake.
The step that matters
Bake for 4 hours at low heat. A long, low bake lets the dense fruit-filled batter cook through evenly without the outside burning before the center sets.
Swap the currant
How well each one fits the dish's main ingredients (butter, sugar, flour, cream, coffee, egg, raisin):
- Vanillafits better
- Figfits better
- Coconutfits better
- Currantthe original
Fit is the average pairing score against butter, sugar, flour, cream, coffee, egg, 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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