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 ↓
Layer 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.
Make the batter
Preheat the oven to 350°F (175°C).
In a bowl, cream together 1 cup sugar and ½ cup butter.
Add ½ cup syrup, ⅔ cup milk, 2 cups flour, 4 egg yolks, 1 cup raisins, 1 cup mixed currants and citron, 1 teaspoon cloves, 1 teaspoon cinnamon, ½ grated nutmeg, and 2 teaspoons baking powder to the mixture. Mix well.
In another bowl, beat 3 egg whites until stiff peaks form.
In a separate bowl, cream together 1½ cups sugar and ½ cup butter.
Add 2 cups flour, 2 teaspoons baking powder, and vanilla extract to the mixture. Mix well.
Gently fold the beaten egg whites into the mixture.
Bake and assemble
Pour the batter into shallow pans and bake until golden.
Stack the layers with boiled icing between each layer and cover the top with icing.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Flour + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
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 give the cake a tender, fine-grained crumb.
- Egg whites
- Whipped to stiff peaks, they trap air that lifts the batter as it bakes.
- All-purpose flour
- Provides the structure that holds the cake's crumb together as it sets.
- Baking powder
- Releases gas during baking, helping the layers rise and become light.
- Egg yolks
- Add richness and help bind the batter, contributing to its structure and color.
- Sugar
- Sweetens the cake and helps it brown as it bakes.
The step that matters
Folding in the egg whites. Whipped whites hold the air that lightens the cake. Stirring them in vigorously deflates the foam, so fold gently with a spatula until just combined.
Swap the currant
How well each one fits the dish's main ingredients (sugar, butter, syrup, milk, flour, egg, raisin):
- Vanillafits better
- Figfits better
- Coconutfits better
- Currantthe original
Fit is the average pairing score against sugar, butter, syrup, milk, flour, 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.
More layer cake recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Vanilla Ice Cream108 recipes
Cinnamon Rolls71 recipes
Red Currant Jelly65 recipes
Clove Cake53 recipes