Raspberry Jam
Ingredients
Directions
Mash the raspberries in a kettle.
Add the granulated sugar to the mashed berries.
Boil the mixture until it jellies on a cold plate.
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.
Photo for illustrative purposes only · Contact us to use it
Explore the science
What each ingredient does
- Red raspberries
- Provide the fruit flavor, pectin, and bulk of the jam.
- Granulated sugar
- Sweetens the jam and helps it set into a thick gel as it cooks.
The step that matters
Boiling until it jellies. Jam sets when sugar and pectin concentrate as water evaporates. Undercooking leaves it runny, while overcooking can make it stiff or scorch, so testing on a cold plate helps judge the set.
“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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