Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. 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
Cream the butter and sugar together.
Add the egg yolks and milk, mixing well.
In a separate bowl, combine the flour, cream of tartar, and baking soda.
Gradually add the dry ingredients to the wet mixture.
Divide the dough into four parts.
Bake the layers
Color one part with melted chocolate and another with pink food coloring; leave the other two uncolored.
Bake each part in separate tins at 350°F (175°C) until done.
Make the filling and assemble
Beat the egg whites and mix with water, lemon rind, and juice.
Slowly pour this mixture over the sugar and flour, cooking until smooth and thick.
Layer the colored cakes with lemon jelly in between.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Cream + chocolatetop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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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
- Butter
- Creams with the sugar to give the cake tenderness and a rich crumb.
- Egg yolks
- Add richness and structure to the batter as it sets in the oven.
- Flour
- Provides the main structure of the cake as it sets when baked.
- Cream of tartar
- Acidifies the batter, helping the leavening react and keeping the crumb fine.
- Baking soda
- Reacts with the acid in the batter to produce gas that lifts the layers.
- Egg whites
- Beaten to add air and lightness to the filling, helping it set as it cooks.
The step that matters
Cooking the egg white mixture until smooth and thick. Egg whites thicken and set when heated, but if the heat is too high or uneven they can curdle or turn grainy. Keep the heat moderate and stir constantly so the mixture thickens evenly and stays smooth.
Swap the lemon
How well each one fits the dish's main ingredients (butter, sugar, egg, milk, flour, cream, chocolate):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against butter, sugar, egg, milk, flour, cream, 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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