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 ↓
King 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.
Prepare
Preheat your oven to 350°F (175°C).
Make the batter
In a bowl, rub the butter and sugar together until very light.
Beat the egg whites slightly, then add them gradually to the butter and sugar mixture.
Add the milk gradually, mixing well after each addition.
Stir in the flavoring.
Sift the baking powder and flour together 2 to 5 times, then mix it into the batter gently.
Bake and assemble
Bake in layers until golden brown.
Assemble the layers with your choice of icing or filling.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 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
- Creamed with sugar to trap air, giving the cake a tender, rich crumb.
- Sugar
- Creams with the butter for lightness and adds sweetness and browning.
- Egg whites
- Add structure and help the batter hold air for a light, set crumb.
- Flour
- Forms the main structure of the cake as the batter sets in the oven.
- Baking powder
- Releases gas in the batter so the layers rise and become light.
- Milk
- Adds moisture and loosens the batter to a pourable consistency.
The step that matters
Mixing the flour and baking powder gently. Overmixing once flour is added develops gluten, which toughens the crumb and can make the layers dense. Gentle folding keeps the cake tender while the baking powder still lifts it.
“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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