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Dessert

Boiled Custard

A custard made by heating milk, mixing with beaten eggs and sugar, then thickening and topping with meringue.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Boiled Custard

Ingredients

Directions

Make the custard

  1. Heat the milk in a saucepan until almost boiling.

  2. Beat the egg yolks until light.

  3. Stir in the sugar.

  4. Remove the milk from the heat.

  5. Gradually add a spoonful or two to the egg mixture, beating well after each addition.

  6. Continue adding milk while mixing until fully combined.

  7. Stir in 5 egg whites that have been whipped until stiff.

  8. Return the mixture to the heat.

  9. Stir constantly until thickened, but do not let it boil.

Finish and serve

  1. Pour the custard into glass cups.

  2. Whip the 2 reserved egg whites with a heaping tablespoon of sugar until stiff.

  3. Once the custard is cold, top each cup with a dollop of meringue.

  4. Optionally, add a little bright jelly or a preserved cherry on top.

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. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

    Shared aroma: 2-nonenal (fatty, green).

  4. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 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

Egg yolks
Thicken the custard as they gently set with heat, adding richness.
Milk
Forms the liquid base that the egg yolks thicken into custard.
Egg whites
Whipped whites add lightness and form the meringue topping.
Sugar
Sweetens the custard and helps stabilize the whipped meringue.

The step that matters

Stir constantly once the mixture returns to the heat. Egg yolks thicken as their proteins gently set. If the custard is left unstirred or allowed to boil, the yolks can scramble and curdle, leaving a grainy texture instead of a smooth custard.

“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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