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 says “a quick oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 350°F (175°C).
In a bowl, cream together the sugar and butter until light and fluffy.
Add the milk and eggs, mixing well.
Gradually stir in the flour and baking powder until just combined.
Bake and serve
Pour the batter into prepared cake pans and bake until a toothpick comes out clean, about 25-30 minutes.
Let the layers cool, then spread frosting between each layer.
Top with sliced bananas before serving.
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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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).
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
- Sugar
- Sweetens the cake and helps create a tender, light crumb when creamed with butter.
- Butter
- Adds fat for richness and tenderness, and traps air when creamed with sugar.
- Eggs
- Add structure and moisture, helping the batter bind and set in the oven.
- Flour
- Forms the structure of the cake as its proteins set during baking.
- Baking powder
- Releases gas during baking so the cake rises and becomes light.
The step that matters
Stir in the flour and baking powder until just combined. Once flour meets liquid, gluten begins to develop. Overmixing makes the cake tough and dense, so stop as soon as no dry streaks remain.
Swap the banana
How well each one fits the dish's main ingredients (sugar, butter, milk, egg, flour):
- Vanillafits better
- Raisinfits better
- Figfits better
- Bananathe original
Fit is the average pairing score against sugar, butter, milk, egg, flour. 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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