Whortleberry Jam
Ingredients
Directions
Place the whortleberries and sugar in a preserving pan.
Boil gently for 1 hour, stirring and breaking up the berries.
Bottle the jam and seal it.
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
- Whortleberries
- Provide the fruit flavour and pectin-rich body that the jam sets around.
- Sugar
- Adds sweetness and helps the jam thicken and keep well as it cooks down.
The step that matters
Boil gently for 1 hour, stirring and breaking up the berries. Sugar and fruit must reduce to a concentrated mixture so the jam sets and keeps. Gentle boiling with regular stirring prevents scorching on the base of the pan and helps the berries break down 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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