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Dessert

Boiled Custard

A custard made by heating milk with lemon peel and bay leaves, then adding sugar and eggs, and cooking until thick.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and laurel are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 2,239 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Boiled Custard

Ingredients

Directions

Infuse the milk

  1. Pour the milk into a saucepan with the laurel leaves and lemon peel.

  2. Heat on the stove for 20 minutes, just until it is about to boil, then strain into a bowl to cool.

Make the custard

  1. Stir in the sugar and beaten eggs, then strain again into a jug.

  2. Place the jug in a deep saucepan of boiling water and stir continuously until it thickens.

Serve

  1. Pour into custard cups and serve with cider jelly at the bottom.

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. Lemon + laureltop 10% of all pairs
    Smell alikemoderate
    Cooked together2,239 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

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

  3. Milk + laureltop 17% of all pairs
    Smell alikemoderate
    Cooked together1,339 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  4. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  5. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

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

Lemon and sugar 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

Milk
Forms the liquid base that gives the custard its body and creamy texture.
Eggs
Their proteins set when gently heated, thickening the custard.
Sugar
Adds sweetness and balances the richness of the milk and eggs.
Lemon peel
Adds a bright citrus aroma to the milk as it is heated.
Laurel leaves
Infuse a subtle aromatic flavour into the warm milk.

The step that matters

Stirring the custard over boiling water until it thickens. Egg proteins set when heated, and if the custard gets too hot or is not stirred constantly, it can curdle or turn grainy. Gentle, continuous stirring spreads the heat evenly so the custard thickens smoothly.

Swap the lemon

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

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

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