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Dessert

Banana Cake

A moist banana cake with a banana‑filled center made from eggs, sugar, flour, and a thickened milk‑cornstarch mixture.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 ingredients
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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

  1. Preheat the oven to 350°F (175°C).

  2. In a bowl, beat the eggs and mix in the powdered sugar, flour, water, baking powder, and vanilla until smooth.

  3. Pour the batter into prepared cake pans and bake until golden.

Make the filling

  1. For the filling, combine milk, cornstarch, and 1 egg in a double boiler.

  2. Cook until thickened, then stir in sugar, butter, and vanilla.

  3. Remove from heat and fold in the sliced bananas.

Assemble

  1. Once the cake layers are cool, spread the banana filling between the layers.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Vanilla + bananatop 1% of all pairs
    Smell alikemoderate
    Cooked together1,430 recipes

    Shared aroma: ethyl isobutyrate (fruity, ethereal).

  2. Vanilla + milktop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

  3. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  5. Milk + bananatop 11% of all pairs
    Smell alikemoderate
    Cooked together1,470 recipes

    Shared aroma: 1-octen-3-one (mushroom, metallic).

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
Bind the batter and, with cornstarch, help thicken the filling.
Flour
Builds the structure of the cake crumb.
Baking powder
Releases gas in the batter so the cake rises.
Cornstarch
Thickens the milk mixture into a custard-like filling as it heats.
Bananas
Add moisture, sweetness, and banana flavor to the filling.
Powdered sugar
Sweetens the batter and contributes to a tender crumb.

The step that matters

Cook the filling until thickened. Cornstarch and egg thicken as the mixture heats, so it must be cooked long enough to thicken fully. Gentle heat in a double boiler helps prevent the egg from curdling or scorching.

Swap the banana

How well each one fits the dish's main ingredients (egg, sugar, flour, vanilla, milk, butter):

  1. Figfits better
  2. Raisinfits about as well
  3. Coconutfits about as well
  4. Bananathe original

Fit is the average pairing score against egg, sugar, flour, vanilla, milk, butter. 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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