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Dessert

Lemon Tapioca Custard

A custard made with sweet milk, tapioca, sugar, eggs, and lemon juice, topped with a browned meringue.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Milk and lemon are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 19,053 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Lemon Tapioca Custard

Ingredients

Directions

Soak the tapioca

  1. Soak the tapioca in the quart of cold water for 3 hours if fine, or 5 hours if coarse.

Make the custard

  1. Heat the milk to a boil in a double boiler.

  2. Add the soaked tapioca and its water to the boiling milk.

  3. Stir constantly until it boils again.

  4. Cook for 10 minutes until the tapioca is well dissolved.

  5. Beat the yolks, half the sugar, and the juice of one lemon in a separate bowl.

  6. Stir in a little of the hot mixture. Add more hot mixture.

  7. Combine everything. Heat again to a boil. Stir.

  8. Cook for 5 minutes until the custard thickens.

  9. Pour the custard into a dish.

Top and serve

  1. Cover with a meringue made from the egg whites, remaining sugar, and lemon juice.

  2. Brown the meringue slightly.

  3. Serve cold or lukewarm.

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 + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

    Shared aroma: 2-nonenal (fatty, green).

  2. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  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. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Tapioca
Swells and thickens the milk as it cooks, giving the custard its body.
Eggs
Yolks thicken the custard when heated, and whites whip into the meringue topping.
Sugar
Sweetens the custard and helps stabilise the meringue.
Lemon juice
Adds acidity that brightens the flavour of the custard and meringue.
Milk
Provides the liquid base and richness for the custard.

The step that matters

Stir in the hot mixture gradually. Adding hot liquid to the egg yolks slowly, while stirring, warms them gently so they do not scramble. Adding it all at once can curdle the eggs and leave the custard lumpy.

Swap the lemon

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

  1. Vanillafits better
  2. Figfits about as well
  3. Raisinfits about as well
  4. Lemonthe original

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