Raspberry Jafl
Ingredients
Directions
Cook the fruit
Mash the raspberries and cook them in their own juice for 30 minutes, stirring often.
Add the sugar
Add ¼ of the sugar and boil for 5 minutes.
Continue adding more sugar, boiling each time until all the sugar is used.
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
- Raspberries
- Provide the main fruit flavour, juice and bulk of the jam.
- Sugar
- Adds sweetness and, once dissolved and boiled, helps the jam thicken and set.
The step that matters
Adding the sugar in stages. Each addition must dissolve and the mixture must boil again before the next. Sugar raises the boiling point and concentrates the fruit's pectin, which lets the jam gel as it cools. Adding too much at once can stall this process.
“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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