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Isinglass and Gelatine Jelly

A clear jelly made with isinglass, gelatin, lemon juice, sugar, wine, and optional flavouring.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Lemon and wine are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 6,157 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Isinglass and Gelatine Jelly

Ingredients

Directions

Make the jelly

  1. Simmer the isinglass in 1½ pints of water until fully dissolved, about 30 minutes.

  2. Just before removing from heat, add lemon juice, cold water, and sugar.

  3. Boil for 2-3 minutes, removing any scum that rises.

  4. Strain through a jelly bag.

Flavour and set

  1. Add wine, lemon juice, sugar, and flavouring to taste.

  2. Pour into a damp mould and let it firm in a cool place.

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 + winetop 13% of all pairs
    Smell alikelow
    Cooked together6,157 recipes

    Shared aroma: decanal (soap, orange peel).

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

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

  3. Sugar + winetop 31% of all pairs
    Smell alikelow
    Cooked together9,581 recipes

    Shared aroma: beta-damascenone (apple, rose).

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 protein that dissolves in hot water and sets into a firm jelly as it cools.
Water
Dissolves the isinglass and forms the body of the jelly.
Lemon juice
Adds acidity that brightens the flavour of the jelly.
Sugar
Adds sweetness that balances the acidity of the lemon juice.
Wine
Adds flavour and aroma to the finished jelly.

The step that matters

Removing the scum while boiling. Scum that rises during boiling contains impurities that would cloud the jelly and spoil its clarity. Skimming it off before straining keeps the finished jelly clear.

Swap the lemon

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

  1. Vanillafits better
  2. Applefits better
  3. Grapefits better
  4. Lemonthe original

Fit is the average pairing score against sugar, wine. 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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