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Liqueur Jelly

A lemon and rum jelly made with isinglass and syrup.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Rum and syrup work together. They rank in the top 17% of all ingredient pairs, and cooks put them together in 367 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Liqueur Jelly

Ingredients

Directions

Prepare

  1. Strain the juice of the lemons.

  2. Add the lemon juice and rum to the lukewarm syrup.

Set and chill

  1. Dissolve the prepared isinglass in the mixture.

  2. Chill the mixture as usual 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. Rum + syruptop 17% of all pairs
    Smell alikelow
    Cooked together367 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Lemon + rumtop 19% of all pairs
    Smell alikemoderate
    Cooked together1,341 recipes

    Shared aroma: alpha-pinene (pine, turpentine).

  3. Lemon + syruptop 20% of all pairs
    Smell alikelow
    Cooked together2,235 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Lemon juice
Adds acidity and bright citrus flavour that balances the sweet syrup.
Rum
Adds aroma and depth of flavour to the jelly.
Isinglass
Sets the liquid into a firm jelly as it cools.
Syrup
Provides sweetness and body to the jelly.

The step that matters

Dissolve the isinglass fully. Isinglass is a collagen-based setting agent that must dissolve completely in the warm mixture. If it stays undissolved, it forms lumps and the jelly sets unevenly.

Swap the lemon

How well each one fits the dish's main ingredients (rum, syrup):

  1. Vanillafits better
  2. Pineapplefits better
  3. Bananafits better
  4. Lemonthe original

Fit is the average pairing score against rum, syrup. 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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