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Dessert

Blackbeeey Jam

A jam made by boiling blackberries with sugar.

From an old cookbook · modernised transcription
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Blackbeeey Jam

Ingredients

Directions

  1. Mash the blackberries in a bowl.

  2. Combine the mashed blackberries and sugar in a pot.

  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 flavor, natural pectin and most of the jam's body once cooked down.
Sugar
Sweetens the jam and helps it thicken and keep by binding water and softening fruit acidity.

The step that matters

Boiling the mixture. Sugar and fruit must cook long enough for the mixture to reach the gel point. Stopping too early leaves runny jam, while overcooking can scorch the sugar and dull the flavor. Stirring prevents sticking and burning on the bottom of the pot.

“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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