Ingredients:
1kg blackberries (leftover from making blackberry whiskey)
1kg jam sugar
Splash of blackberry cordial/squash
Method:
Heat the fruit in a large pan with the sugar and cordial. Stir until dissolved.
Slowly bring to a rolling boil and boil rapidly, without stirring, for about 10 - 15 minutes until setting point is reached.
Pour into warm, sterilised jars.