Why it works: Vanilla and banana are a kitchen classic. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,430 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. 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 cake
Cream the butter and sugar together until light and fluffy.
Add the beaten egg yolks, water, and vanilla extract, mixing well.
Fold in the well-beaten egg whites and flour gently.
Pour the batter into layers and bake at 350°F (175°C) until golden.
Make the filling and assemble
For the filling, beat together the powdered sugar and egg whites until smooth.
Spread the filling on the cake and top with thinly sliced bananas.
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 + bananatop 1% of all pairsSmell alikemoderateCooked together1,430 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
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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 + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Butter
- Adds richness and a tender texture when creamed with sugar.
- Sugar
- Sweetens the cake and, creamed with butter, helps create a light crumb.
- Egg whites
- Whipped foam traps air that lifts the batter as it bakes.
- Flour
- Forms the structure that holds the cake's crumb together.
- Cream of tartar
- Stabilises the whipped egg whites so their foam holds its shape.
- Bananas
- Add sweet fruit flavour and moisture to the filling and top.
The step that matters
Folding in the egg whites. Whipped egg whites hold the air that lifts the cake. Folding gently, rather than stirring, keeps that air in the batter so the cake rises evenly and stays light.
Swap the banana
How well each one fits the dish's main ingredients (butter, sugar, egg, vanilla, flour, cream):
- Raisinfits better
- Figfits about as well
- Coconutfits about as well
- Bananathe original
Fit is the average pairing score against butter, sugar, egg, vanilla, flour, cream. 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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