Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Harlequin 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).
Cream the butter and sugar together.
Add the milk, then sift in the flour and baking powder.
Beat the egg whites to a stiff froth and fold them into the mixture along with the vanilla.
Divide the batter in half; color one half with prepared cochineal for the pink layer.
Make the yellow layer
For the yellow layer, cream the butter and sugar, then add the yolks, milk, lemon juice, and rind.
Sift in the flour and baking powder, mixing well.
Divide this mixture; color one half with melted chocolate.
Bake and assemble
Bake all layers until done, then layer them as follows: brown, yellow, white, and pink, using soft frosting or jelly between 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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Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Vanilla + chocolatetop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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.
- Butter
- Creamed with sugar to trap air, giving the cake a tender, rich crumb.
- Sugar
- Creamed with butter to help build a light texture and adds sweetness.
- Egg whites
- Beaten to a stiff froth, they trap air that lifts and lightens the batter.
- Baking powder
- Releases gas in the batter, causing the layers to rise in the oven.
- Melted chocolate
- Colours the brown layer and adds chocolate flavour.
The step that matters
Folding the beaten egg whites into the batter. Egg whites hold air only while they are stiff. Folding gently keeps that air in the batter, so the layers rise light instead of dense and flat.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, milk, flour, egg, vanilla, chocolate):
- Coconutfits better
- Figfits better
- Raisinfits better
- Lemonthe original
Fit is the average pairing score against sugar, butter, milk, flour, egg, vanilla, chocolate. 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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