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Dessert

Firm Custard

A custard made from milk, sugar, egg yolks, and flavorings, steamed or oven-poached until firm.

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 ↓

Firm Custard

Oven, in the book's wordsA moderate oven

Ingredients

Directions

Prepare the custard base

  1. Beat the egg yolks slightly.

  2. Add sugar and salt to the yolks.

  3. Heat the milk.

  4. Slowly add the heated milk to the egg mixture, stirring until the sugar dissolves.

  5. Add the flavoring.

  6. Strain the mixture.

Steam and test

  1. Pour it into custard cups.

  2. To steam, place the cups in a steamer over gently boiling water and steam until firm.

  3. To oven-poach, place the cups in a pan of hot water and cook in a moderate oven at 325°F (175°C) until firm.

  4. To test, insert a silver knife in the center of the custard; it is done if the knife comes out clean.

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. Sugar + eggtop 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
Coagulate when heated, giving the custard its firm, set structure.
Milk
Provides the liquid base and moisture that keeps the custard tender.
Sugar
Adds sweetness and helps dissolve smoothly into the warm milk and yolks.

The step that matters

Steaming or oven-poaching until just firm. Egg proteins set when heated, so overcooking at too high a heat makes the custard curdle, weep, or turn rubbery. Gentle, moderate heat keeps it smooth; the knife test shows when it is set.

“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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