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Dessert

Lemon Custard

A custard made with lemon juice and cream, set by pouring hot cream over the juice.

From an old cookbook · modernised transcription
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Lemon Custard

Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

Lemon Custard

Ingredients

Directions

Prepare

  1. Juice the lemons into a bowl.

  2. Heat the cream until it is scalding hot.

Combine and set

  1. Pour the hot cream from a teapot over the lemon juice in the bowl.

  2. Let the mixture sit for 10 to 12 hours before serving.

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.

Photo for illustrative purposes only · Contact us to use it

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. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

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

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

  3. Lemon + creamtop 30% of all pairs
    Smell alikelow
    Cooked together15,640 recipes

    Shared aroma: acetic acid (sour, vinegar).

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

Lemon juice
Provides the tart acidity that defines the flavour of the dish.
Cream
Provides fat and richness, giving the custard a smooth, creamy body.
Fine sugar
Adds sweetness to balance the sourness of the lemon juice.

The step that matters

Pour the hot cream over the lemon juice. Hot cream meeting acidic lemon juice can curdle its proteins, so the pour matters for a smooth result.

Swap the lemon

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

  1. Vanillafits better
  2. Strawberryfits better
  3. Raspberryfits better
  4. Lemonthe original

Fit is the average pairing score against sugar, cream. 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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