Why it works: Vanilla and milk 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 ↓
Layer Cake No. II
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
Preheat the oven to 350°F (175°C).
Make the batter
Cream the butter and sugar together until light and fluffy.
Add the egg yolks, lemon rind, vanilla, and beat well.
Mix in the milk.
Sift the flour with the baking powder and add to the mixture.
In a separate bowl, beat the egg whites to stiff peaks and fold them into the batter.
Bake
Grease jelly tins and pour in the batter.
Bake for 6 to 8 minutes until light brown.
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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Vanilla + milktop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + vanillatop 12% of all pairsSmell alikemoderateCooked together19,241 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
- Eggs
- Whites trap air for lift; yolks add richness and structure.
- Flour
- Provides the structure that holds the cake's crumb together.
- Butter
- Adds richness and tenderness, and creaming it helps trap air.
- Sugar
- Adds sweetness and, creamed with butter, helps give a light texture.
- Baking powder
- Releases gas in the batter, causing the cake to rise.
- Milk
- Adds moisture and helps form a smooth, pourable batter.
The step that matters
Folding in the beaten egg whites. Egg whites hold air only when beaten to stiff peaks, and folding gently keeps that air in the batter. Stirring vigorously or overmixing deflates the foam, so the cake rises less and turns out denser.
Swap the mace
The recipe marks mace as optional. How well each one fits the dish's main ingredients (egg, flour, sugar, lemon, vanilla, butter, milk):
- Cinnamonfits better
- Nutmegfits better
- Tarragonfits better
- Macethe original
Fit is the average pairing score against egg, flour, sugar, lemon, vanilla, butter, milk. 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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