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Dessert

Liqueur Jelly

A gelatin dessert made with sugar, isinglass, water, lemon juice, and liqueur.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Liqueur Jelly

Ingredients

Directions

Make the syrup

  1. Combine the sugar and 1 pint of water in a saucepan.

  2. Boil gently, skimming off any scum that forms.

Add the flavourings and isinglass

  1. Boil the isinglass with the remaining ½ cup of water until dissolved.

  2. Add the lemon juice and liqueur to the clear sugar mixture.

  3. Stir in the dissolved isinglass and mix well.

Set the jelly

  1. Pour the mixture into molds.

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

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

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

Lump sugar
Provides sweetness and body, rounding out the sharp lemon and liqueur flavours.
Isinglass
Fish-derived collagen that gels as it cools, giving the jelly its set.
Lemon juice
Adds acidity that brightens the flavour and balances the sugar.
Liqueur
Contributes the main aroma and flavour of the jelly.

The step that matters

Dissolve the isinglass fully before adding it. Isinglass sets only when its collagen is fully dissolved in hot water. Undissolved grains stay in the mixture as specks and leave weak, uneven patches in the set jelly.

“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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