You can either add this to jars or a decorative mould for serving on a cheese platter.
750g apples, sliced, unpeeled and uncored
1. Put blackberries and apples into a preserving pan. Add water to just cover fruit. Cook until fruit is pulpy. Strain through a jelly bag or fine cloth.
2. Measure juice and return to pan. For each cup of juice, add ¾ cup sugar. Bring to the boil, stirring until sugar is dissolved. Boil briskly.
3. Stir occasionally and test for setting after 10 to 15 minutes. When setting point is reached pour into sterilised jars or into a mould.