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Dessert

Quaking Custard

A custard made with milk, egg yolks, gelatin, sugar, vanilla, lemon, and topped with meringue.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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 ↓

Quaking Custard

Ingredients

Directions

Prepare the custard

  1. Soak the gelatin in 1 cup of cold milk for 2 hours.

  2. Heat the remaining milk until boiling, then stir in the soaked gelatin until dissolved.

  3. Let it stand for a few minutes, then strain through muslin over the beaten yolks and sugar.

  4. Cook over low heat for 5 minutes, stirring until it thickens.

Set and chill

  1. Once nearly cold, stir well, add flavoring, and let it sit until it begins to congeal around the edges.

  2. Stir again and pour into a wet mold.

  3. Chill in ice or cold water until firm.

Serve

  1. To serve, turn it out into a glass bowl.

Make the meringue

  1. For the meringue, whip the egg whites until stiff, then gradually add the powdered sugar and lemon juice.

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. Gelatin + sugartop 7% of all pairs
    Smell alikemoderate
    Cooked together2,778 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  4. Vanilla + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together5,961 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 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

Milk
Forms the liquid base that sets into the custard.
Egg yolks
Thicken the custard and add richness as they cook gently.
Gelatin
Sets the custard so it holds its shape when chilled and turned out.
Sugar
Sweetens the custard and adds body to the mixture.
Lemon juice
Adds acidity that brightens the sweet meringue.

The step that matters

Cooking the custard over low heat. Egg yolks thicken at gentle heat but scramble and curdle if they get too hot. Low heat and constant stirring let the custard thicken smoothly.

Swap the lemon

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

  1. Figfits better
  2. Peachfits better
  3. Strawberryfits better
  4. Lemonthe original

Fit is the average pairing score against milk, egg, gelatin, sugar, vanilla. 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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