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Dessert

Quaking Custard

A gelatin-based custard thickened with milk, egg yolks, and sugar, finished with vanilla and lemon, 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 gelatin and milk

  1. Soak the gelatin in ½ cup of cold milk for 2 hours.

  2. Heat the remaining milk until boiling.

  3. Stir in the soaked gelatin until dissolved.

  4. Let it stand for a few minutes.

Make the custard

  1. Strain through muslin over the beaten yolks and sugar.

  2. Cook over low heat, stirring for 5 minutes until thickened.

  3. Stir well.

  4. Add vanilla.

  5. Let it congeal around the edges of the bowl.

  6. Stir again.

Set and serve

  1. Pour into a wet mold.

  2. Chill in the ice or a cold place until firm.

  3. Turn the custard into a glass bowl.

  4. Whip the egg whites until stiff.

  5. Gradually add 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

Gelatin
Sets the custard into a firm, wobbly texture as it cools.
Egg yolks
Thicken the custard and add richness when gently cooked.
Milk
Forms the liquid base that the custard thickens and sets from.
Sugar
Sweetens the custard and helps balance the flavour of the yolks.
Egg whites
Whipped to stiff peaks to form the light meringue topping.

The step that matters

Cook the custard over low heat. Egg yolks thicken at gentle heat; if the custard gets too hot it can curdle or scramble, so stirring steadily over low heat matters.

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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