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Dessert

Boston Cream Pie

A layered dessert with sponge cake, custard filling, and whipped cream topping.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 ingredients
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Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Boston Cream Pie

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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Make the cake

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

  2. In a bowl, cream together the sugar and butter.

  3. Add the flour and baking powder, mixing well.

  4. Fold in the beaten egg whites gently.

  5. Pour the batter into a greased baking sheet or layer cake pans.

  6. Bake until golden brown, about 25-30 minutes.

Make the filling

  1. For the filling, mix the egg yolks, sugar, and flour in a saucepan.

  2. Scald the milk and gradually stir it into the egg mixture.

  3. Cook over medium heat until thickened, stirring constantly.

Assemble and top

  1. Spread the filling over the cooled cake layers.

  2. For the topping, whip the cream and mix in the sugar and vanilla.

  3. Spread the whipped cream on top of the pie.

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. Milk + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

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

  2. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  3. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

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

  5. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

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 fat and tenderness to the cake crumb and rich flavour.
Egg whites
Whipped and folded in, they lighten the batter and give the cake structure as it sets.
Egg yolks
Thicken the custard filling as they cook and add richness.
Flour
Provides the structure of the cake and thickens the custard filling.
Baking powder
Releases gas in the batter so the cake rises and becomes light.
Milk
Forms the liquid base of the custard filling, adding moisture and body.

The step that matters

Cook the custard until thickened. Egg yolks and flour thicken the filling only when heated enough, but overcooking can curdle the eggs. Stirring constantly over medium heat keeps the custard smooth.

“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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