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Dessert

Custard for Cake

A custard made from sweet milk, corn starch, egg yolks, sugar, vanilla, and lemon zest, used as a cake filling.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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 ↓

Custard for Cake

Ingredients

Directions

Make the custard

  1. Combine sweet milk and corn starch in a saucepan, stirring until smooth.

  2. Add egg yolks and sugar, cook over medium heat, stirring constantly until thickened.

  3. Remove from heat, add vanilla extract and lemon zest.

Cool and use

  1. Let the custard cool before using it in your cake.

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

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

  3. Corn + vanillatop 9% of all pairs
    Smell alikemoderate
    Cooked together1,943 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  4. Milk + corntop 10% of all pairs
    Smell alikemoderate
    Cooked together6,955 recipes

    Shared aroma: hexanal (green, grassy).

  5. Corn + lemontop 13% of all pairs
    Smell alikemoderate
    Cooked together1,927 recipes

    Shared aroma: 2-nonenal (fatty, 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

Corn starch
Thickens the milk into a smooth custard as it heats and gelatinizes.
Egg yolks
Add richness and, as they set on heating, help thicken and enrich the custard.
Sugar
Sweetens the custard and adds body to its texture.
Sweet milk
Forms the liquid base that the starch and yolks thicken.

The step that matters

Stirring while the custard cooks. Starch and egg yolks can scorch on the bottom of the pan or form lumps if heated unevenly. Constant stirring over medium heat keeps the mixture smooth as the starch swells and thickens.

Swap the lemon

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

  1. Figfits better
  2. Coconutfits better
  3. Blueberryfits better
  4. Lemonthe original

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