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Dessert

Blackbeeey Jam

A jam made from blackberries and sugar boiled until thick.

From an old cookbook · modernised transcription
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Blackbeeey Jam

Ingredients

Directions

  1. Mash the blackberries in a bowl.

  2. In a separate bowl, combine the mashed blackberries and sugar.

  3. Boil the mixture for 30 to 45 minutes, stirring occasionally.

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

Blackberries
Provide the fruit base, bulk, and flavour that the jam is built around.
Sugar
Sweetens the jam and helps it thicken and keep as it cooks down.

The step that matters

Boil the mixture for 30 to 45 minutes, stirring occasionally. Boiling evaporates water and concentrates the fruit and sugar so the jam thickens. Stirring prevents sticking and scorching on the bottom of the pan, which would give a burnt taste.

“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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