Skip to main content
Dessert

Boiled Custard

A custard made by heating milk with vanilla, whisking egg yolks, and cooking until thickened.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
Jump to recipe ↓

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

  1. In a saucepan, bring the milk and vanilla bean to a boil, stirring frequently to prevent burning.

  2. In a bowl, beat the egg yolks well.

  3. Pour the boiling milk over the egg yolks, stirring continuously.

  4. Add powdered sugar to achieve desired sweetness.

  5. Return the mixture to the clean saucepan and cook over low heat, stirring constantly until it thickens without boiling.

  6. If the custard curdles, place the saucepan in a basin of cold water and beat vigorously with a whisk until smooth.

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. Vanilla + sugartop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  3. Egg + milktop 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).

Vanilla and sugar 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, and add richness.
Milk
Forms the liquid base that the yolks thicken into a smooth custard.
Sugar
Adds sweetness to balance the rich, eggy flavour.

The step that matters

Cooking the custard without boiling. Egg yolks thicken from gentle heat but curdle when they overheat. Cooking over low heat and stirring constantly keeps the proteins smooth and prevents the custard from scrambling.

“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.

More boiled custard recipes

Pudding 12Rich 6 See all 257 →

You might also like

Vanilla Ice CreamVanilla Ice Cream108 recipesWhite CakeWhite Cake431 recipesPound CakePound Cake373 recipesOrange Bundt CakeOrange Bundt Cake349 recipes