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Dessert

Boiled Custard

A boiled custard made with milk, eggs, sugar, salt, and flavoring, finished with rich milk.

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 ↓

Boiled Custard

Ingredients

Directions

Prepare

  1. In a double boiler, bring the milk to a boil. Add the salt.

  2. Beat the eggs until light. Mix the sugar into the beaten eggs.

Make the custard

  1. Remove the milk from heat.

  2. Slowly stir the egg and sugar mixture into the milk.

  3. Return the mixture to heat. Stir constantly until the custard thickens.

  4. Remove from heat.

Finish

  1. Strain the custard through a fine wire strainer. Add flavoring to taste.

  2. Once the custard is cold, beat in the rich milk.

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

Eggs
Thicken the custard as they set when gently heated, giving it body.
Milk
Forms the liquid base that the eggs thicken into a smooth custard.
Sugar
Sweetens the custard and adds body to the beaten eggs.
Rich milk
Adds extra fat and richness to the chilled custard.

The step that matters

Stir constantly until the custard thickens. Egg proteins set with heat, so if the custard is overheated or left unstirred it can curdle or scramble. Constant stirring over gentle heat keeps the eggs evenly cooked and 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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