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To Prepare Gelatine

A method for making gelatin by simmering bones in water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 2 ingredients
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To Prepare Gelatine

Ingredients

Directions

Prepare

  1. Fill a digester or boiler with enough water to cover the bones.

  2. Add 1 pound of broken bones to the water.

Simmer

  1. Bring to a boil over medium heat, then skim off any foam.

  2. Cover with a lid.

  3. Reduce heat to maintain a gentle simmer.

  4. Occasionally stir the bones and remove any fat that rises to the surface.

  5. Repeat the process up to three times with the same bones for additional broth or jelly.

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

Bones
Supply collagen, which breaks down during long simmering into gelatin that thickens the liquid.

The step that matters

Maintain a gentle simmer. Boiling vigorously can emulsify fat into the liquid and make it cloudy, while a gentle simmer extracts collagen steadily and keeps the broth clearer. Removing fat as it rises also helps keep the final gelatin clean.

“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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