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Dessert

Rhubarb Isinglass Jelly

A jelly made from rhubarb, water, sugar, and isinglass, strained and cooled into a set consistency.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Rhubarb and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 1,852 recipes. Both carry 1-penten-3-one, which smells fish, pungent. The science ↓

Rhubarb Isinglass Jelly

Ingredients

Directions

Prepare the rhubarb

  1. Wash and slice the rhubarb without peeling, removing any coarse or discolored parts.

  2. Combine the rhubarb and water in an enamelled stewpan.

  3. Add the sugar to the stewpan.

  4. Boil gently for 20 minutes until the rhubarb is stewed but not thickened.

  5. Strain the mixture through a muslin cloth folded in four, measuring 1½ pints of juice.

Make the jelly

  1. Heat the juice in a clean pan.

  2. Add the isinglass and additional sugar to the heated juice.

  3. Stir the mixture until the isinglass is fully dissolved.

  4. Boil quickly for a few minutes to remove scum.

  5. Clear off the scum from the surface.

  6. Strain the jelly twice through the muslin cloth.

  7. Let the jelly cool.

  8. Mold the cooled jelly as desired.

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. Rhubarb + sugartop 18% of all pairs
    Smell alikemoderate
    Cooked together1,852 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

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

What each ingredient does

Rhubarb
Provides the tart flavor and the pectin-rich body that gives the juice its character.
Isinglass
Fish-derived gelatin that sets the strained juice into a clear, firm jelly when cooled.
Sugar
Sweetens the tart rhubarb juice and adds body to the finished jelly.

The step that matters

Stir until the isinglass is fully dissolved. Isinglass must dissolve completely in the hot juice; undissolved pieces won't set evenly and can leave cloudy or grainy spots in the finished 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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