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Isinglass Jelly, Orange

A clear orange jelly made with isinglass and orange juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Orange and sugar are a kitchen classic. They rank in the top 20% of all ingredient pairs, and cooks put them together in 19,212 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Isinglass Jelly, Orange

Ingredients

Directions

Prepare

  1. Strain the juice of the sweet and Seville oranges into a bowl.

  2. Dissolve the isinglass in boiling water.

Make the jelly

  1. Add the dissolved isinglass and sugar to the orange juice.

  2. Stir gently over low heat, avoiding boiling.

Set

  1. When nearly cold, pour the mixture into earthenware molds filled with cold water.

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. Orange + sugartop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

Orange and sugar barely smell alike, yet cooks put them together in 19,212 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
Sets the juice into a firm, wobbly gel as it cools.
Loaf sugar
Adds sweetness and balances the tartness of the juice.
Sweet oranges
Provide most of the liquid and mild, sweet orange flavour.
Seville oranges
Add sharp acidity and a more aromatic, bitter orange character.

The step that matters

Stir gently over low heat, avoiding boiling. Isinglass is a protein-based gelling agent, and boiling can weaken its setting power and cloud the jelly. Gentle heat dissolves the sugar and blends the juice while keeping the gel strong and the jelly clear.

“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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