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 ↓
Black and White 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 the white batter
Preheat the oven to 350°F (175°C).
Cream together 1 cup sugar and ½ cup butter until light and fluffy.
Add ½ cup sweet milk and 3 egg whites, mixing well.
Sift together 1 cup flour, ½ cup corn starch, and 1 teaspoon baking powder.
Fold the sifted dry ingredients into the mixture.
Make the black batter
For the black part, cream 1 cup brown sugar and ½ cup butter.
Stir in ½ cup sour milk and 1 teaspoon baking soda.
Add 1½ cups flour, ½ cup raisins, ½ cup nuts, 3 egg yolks, 1 teaspoon molasses, and spices.
Mix the black mixture well.
Bake
Layer the white and black mixtures in a greased cake pan.
Bake for 30-40 minutes 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).
-
Raisin + nutstop 10% of all pairsSmell alikemoderateCooked together490 recipes
Shared aroma: decanal (soap, orange peel).
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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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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
- Egg whites add structure and lift to the light white batter, while yolks enrich the dark batter.
- Butter
- Creamed with sugar, it traps air and gives the cake a tender, rich crumb.
- Brown sugar
- Adds moisture and a deeper, caramel-like sweetness to the dark batter.
- Baking soda
- Reacts with the sour milk to release gas, helping the dark batter rise.
- Flour
- Forms the cake's main structure once its proteins set during baking.
- Molasses
- Darkens the batter and adds moisture and a rich, slightly bitter flavour.
The step that matters
Layering the white and black batters. The two batters have different densities and rising power, so pouring them in carefully keeps the layers distinct and prevents the lighter white batter from mixing into the dark one.
Swap the nuts
How well each one fits the dish's main ingredients (sugar, butter, milk, egg, flour, corn, raisin):
- Almondfits better
- Chestnutfits better
- Pistachiofits better
- Nutsthe original
Fit is the average pairing score against sugar, butter, milk, egg, flour, corn, 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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