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Dessert

Very Good Old-fashioned Boiled Custard

A custard made by infusing lemon rind in milk, combining with sugar, eggs, and milk, then simmering until thickened.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Lemon and almond match in chemistry and in kitchens. They rank in the top 10% of all ingredient pairs, and cooks put them together in 5,655 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Very Good Old-fashioned Boiled Custard

Ingredients

Directions

Prepare

  1. Infuse the lemon rind in 1½ pints of milk for 30 minutes.

  2. Combine the infused milk with 4½ ounces of sugar and heat gently.

Make the custard

  1. Beat the yolks of 14 eggs and mix with ½ pint of milk.

  2. Quickly stir the hot milk into the egg mixture.

  3. Remove the lemon rind and pour the custard into a deep jug.

  4. Set the jug over a pot of simmering water and stir gently until thickened.

  5. If desired, add blanched almonds or bruised bitter almonds for flavor.

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 + almondtop 10% of all pairs
    Smell alikestrong
    Cooked together5,655 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  3. Milk + almondtop 16% of all pairs
    Smell alikemoderate
    Cooked together5,800 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  4. Sugar + almondtop 18% of all pairs
    Smell alikemoderate
    Cooked together15,679 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

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

Egg yolks
Thicken the custard as they heat and set, giving it a rich, smooth body.
Milk
Forms the liquid base, and its proteins set gently alongside the yolks.
Sugar
Sweetens the custard and balances the richness of the yolks.
Lemon rind
Adds fragrant citrus aroma as its oils infuse into the warm milk.

The step that matters

Stir gently over simmering water until thickened. Egg yolks thicken through gentle heat, as their proteins set. If the custard gets too hot or is stirred too vigorously, the yolks can scramble and curdle, so keep the heat low and the stirring steady.

Swap the almond

The recipe marks almond as optional. How well each one fits the dish's main ingredients (milk, lemon, sugar, egg):

  1. Milletfits about as well
  2. Almondthe original
  3. Pistachiofits about as well
  4. Walnutfits about as well

Fit is the average pairing score against milk, lemon, 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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