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 ↓
Marble 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 the batters
Preheat the oven to 350°F (175°C).
Beat the egg whites with the sugar until fluffy.
Cream the butter.
Mix in the sour milk, flour, and baking soda.
Beat the egg yolks with brown sugar and molasses.
Add the butter, sour milk, flour, and spices to the yolk mixture.
Bake
Combine both mixtures in a greased cake pan, swirling them together.
Bake for two 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).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
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).
-
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
- Eggs
- Whites whip into foam for lift; yolks add richness and help bind the batter.
- Flour
- Provides the structure that sets the cake as the batter bakes.
- Baking soda
- Reacts with the acidic sour milk to produce gas that makes the cake rise.
- Butter
- Adds fat for tenderness and flavor in both batters.
- Molasses
- Adds moisture, deep sweetness and color to the dark batter.
The step that matters
Swirling the two mixtures together. Swirl gently, only enough to create streaks. Overmixing blends the light and dark batters into an even color and deflates the whipped egg whites, which reduces the cake's lift and makes the marbled pattern disappear.
Swap the raisin
The recipe marks raisin as optional. How well each one fits the dish's main ingredients (egg, sugar, butter, milk, flour, molasses):
- Raisinthe original
- Vanillafits about as well
- Figfits less well
- Peachfits less well
Fit is the average pairing score against egg, sugar, butter, milk, flour, molasses. 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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