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 ↓
Banana 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 until light and fluffy.
Add the milk and flour alternately to the mixture.
Fold in the baking powder and beaten egg whites last.
Bake and assemble
Pour the batter into cake pans and bake until golden.
Once cooled, remove from pans and layer with boiled icing and sliced bananas.
Finish the top of the cake with plain 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.
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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Milk + bananatop 11% of all pairsSmell alikemoderateCooked together1,470 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 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).
Flour and butter 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 light, tender crumb and rich flavour.
- Egg whites
- Beaten and folded in to add air and structure as the cake sets in the oven.
- Baking powder
- Releases gas in the batter, helping the cake rise and become light.
- Flour
- Forms the main structure of the cake as its proteins set during baking.
- Sugar
- Sweetens the cake and helps create a soft, fluffy texture when creamed with butter.
- Milk
- Adds moisture to the batter and helps it combine smoothly with the flour.
The step that matters
Folding in the beaten egg whites. Egg whites hold air bubbles that give lift. Folding gently, rather than stirring, keeps those bubbles intact so the cake rises well and stays light.
Swap the banana
How well each one fits the dish's main ingredients (sugar, flour, butter, milk, egg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Bananathe original
Fit is the average pairing score against sugar, flour, butter, milk, egg. 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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