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Dessert

Custard Jelly

Custard jelly is made by setting thick custard with isinglass.

From an old cookbook · modernised transcription
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Custard Jelly

Ingredients

Directions

Prepare

  1. Prepare a quart of thick custard.

  2. Dissolve 1 ounce of isinglass in a small amount of warm water.

  3. Mix the dissolved isinglass into the custard.

Set and serve

  1. Pour the mixture into a mold.

  2. Refrigerate until cold and set.

  3. Turn out the jelly onto a serving plate.

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

What each ingredient does

Custard
Provides the creamy base and body of the jelly once set.
Isinglass
A gelatin-like setting agent that firms the custard as it cools.

The step that matters

Dissolving the isinglass. Isinglass must be fully dissolved in warm water before it is mixed in, otherwise it can form lumps and set unevenly. It sets as it cools, so the mixture should be poured into the mold before it firms.

“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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