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Dessert

Soft Custard

A custard made with milk, egg yolks, sugar, salt, and vanilla, cooked slowly until thick.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Soft Custard

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 ↓

Soft Custard

Ingredients

Directions

Make the custard

  1. In a double boiler, combine the milk, egg yolks, sugar, salt, and vanilla extract.

  2. Cook over simmering water, stirring constantly until the mixture thickens.

  3. Strain the custard to remove any lumps.

Cool and finish

  1. Allow to cool, then add additional flavoring if desired.

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.

Photo for illustrative purposes only · Contact us to use it

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 set with gentle heat, giving it a smooth, rich body.
Milk
Forms the liquid base that the egg yolks thicken into a pourable custard.
Sugar
Adds sweetness and balances the richness of the milk and egg yolks.

The step that matters

Cook over simmering water, stirring constantly until the mixture thickens. Egg proteins set at moderate heat, so gentle, constant stirring keeps the custard smooth. Overheating or leaving it unstirred can scramble the eggs into lumps, which is why the straining step is needed.

“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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