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 ↓
Neapolitan 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.
Prepare
Preheat the oven to 350°F (175°C).
Make the batters
In a bowl, mix together brown sugar, eggs, butter, molasses, strong coffee, flour, raisins, currants, baking soda, cinnamon, cloves, and mace.
In another bowl, cream together sugar and butter, then add milk, flour, corn starch, egg whites, and cream of tartar.
Bake and frost
Pour the dark mixture into a greased cake pan, followed by the white mixture.
Bake until a toothpick inserted comes out clean.
Whip the egg whites for frosting and spread between the layers.
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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Raisin + curranttop 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).
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Molasses + raisintop 12% of all pairsSmell alikelowCooked together3,577 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Flour
- Provides the structure that holds the cake's crumb together as it bakes.
- Eggs
- Bind the batter and add structure and richness to the crumb.
- Butter
- Adds fat that tenderises the crumb and carries flavour.
- Molasses
- Adds sweetness, moisture and the dark colour of the batter.
- Baking soda
- Reacts with the acidic molasses and coffee to help the cake rise.
- Egg whites
- Whipped into a foam for frosting, adding lightness and a soft, airy texture.
The step that matters
Whipping the frosting egg whites. Any fat or egg yolk in the bowl stops whites from foaming fully, and whites beaten too long turn dry and grainy. Clean equipment and stopping at soft, glossy peaks give a smooth, stable frosting.
Swap the currant
How well each one fits the dish's main ingredients (sugar, egg, butter, molasses, coffee, flour, raisin):
- Vanillafits better
- Figfits better
- Applefits about as well
- Currantthe original
Fit is the average pairing score against sugar, egg, butter, molasses, coffee, 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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