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Dessert

Boiled Custard

A custard made by heating milk, mixing with sugar and egg yolks, and gently cooking until thickened.

From an old cookbook · modernised transcription
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Why it works: Nutmeg and cinnamon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 11,917 recipes. Both carry estragole, which smells anise, licorice. The science ↓

Boiled Custard

Ingredients

Directions

  1. Heat the milk in a pan over boiling water until it foams.

  2. Add the sugar to the milk to cool it slightly.

  3. In a bowl, mix the beaten egg yolks with the sugar.

  4. Gradually add several spoons of the hot milk to the egg mixture, stirring constantly.

  5. Slowly stir the egg mixture back into the boiling milk.

  6. Stir constantly until the mixture thickens slightly, but do not let it curdle.

  7. Remove from heat and cool immediately in cold water or a cold dish.

  8. Add flavoring extracts after removing from heat.

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. Nutmeg + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together11,917 recipes

    Shared aroma: estragole (anise, licorice).

  2. Vanilla + peachtop 1% of all pairs
    Smell alikestrong
    Cooked together558 recipes

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

  3. Vanilla + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together5,287 recipes

    Shared aroma: 4-methoxybenzaldehyde (sweet, anise).

  4. Laurel + cinnamontop 4% of all pairs
    Smell alikestrong
    Cooked together691 recipes

    Shared aroma: cinnamyl acetate (sweet aromatic, cinnamon).

  5. Milk + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Milk
Forms the liquid base that thickens into a creamy custard.
Egg yolks
Thicken the custard as they set with gentle heat and add richness.
Sugar
Sweetens the custard and helps soften the egg proteins as they cook.

The step that matters

Stir constantly until the mixture thickens slightly, but do not let it curdle.. Egg proteins set with heat, so if the custard gets too hot or is left unstirred, it can scramble and curdle. Stopping as soon as it thickens and cooling it right away keeps it smooth.

Swap the peach

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

  1. Figfits better
  2. Blueberryfits about as well
  3. Peachthe original
  4. Cherryfits about as well

Fit is the average pairing score against milk, sugar, egg, vanilla, laurel, nutmeg, cinnamon. 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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