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Dessert

Lemon Solid

A lemon custard set in molds, made with cream, milk, lemon rind, isinglass, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cream and sugar 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 Solid

Ingredients

Directions

Make the lemon cream

  1. Pare the rind of the lemons very thin and boil it with isinglass in cream and milk.

  2. Add sugar to taste and dissolve the isinglass.

  3. Strain the mixture and let it cool slightly.

Set and serve

  1. Stir in the juice of the two lemons until it begins to thicken.

  2. Pour into moulds and refrigerate until set.

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. Cream + sugartop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

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

  2. Lemon + milktop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

  3. Cream + milktop 18% of all pairs
    Smell alikemoderate
    Cooked together29,399 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

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

  5. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 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

Isinglass
Gelatin-like setting agent that firms the cream into a sliceable solid when chilled.
Cream
Adds fat and richness, giving the set dessert a smooth, soft texture.
Lemons
Supply acidity and aroma from the juice and rind, balancing the sweetness.
Milk
Adds moisture and mild dairy flavour, thinning the cream base slightly.

The step that matters

Stir in the lemon juice at the right moment. Acid added to warm dairy can cause curdling, and the setting agent needs the mixture cool enough to thicken evenly. Stirring in the juice once it has cooled slightly, and only until it begins to thicken, helps keep the cream smooth.

Swap the lemon

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

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

Fit is the average pairing score against cream, milk, 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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