Blackberry Jam
Ingredients
Directions
Gather the blackberries on a dry day.
Combine the blackberries and sugar in a pot.
Boil gently for 1 hour, stirring and mashing the blackberries until soft.
Preserve the jam as you would any other jam.
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 flavour, pectin-bearing pulp and bulk of the jam.
- Coarse brown sugar
- Sweetens the jam and helps it thicken and set as the mixture cooks down.
The step that matters
Boil gently while stirring and mashing. Sugar and fruit must cook long enough to concentrate and gel. Stirring prevents scorching on the bottom of the pot, and mashing breaks the berries down so the jam sets evenly.
“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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