Blackberry Jam
Ingredients
Directions
Wash the blackberries thoroughly.
Mash the blackberries in a large pot.
Add an equal amount of sugar to the mashed blackberries.
Cook over medium heat, stirring frequently, until the mixture thickens.
Pour the hot jam into sterilized jars and seal.
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.
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