This blackberry and apple jam is easy to make, with plenty of natural pectin from Bramley apples, and so delicious.
Mash apple and blackberries to make sure there aren't any lumps.
Place jam jars and lids in a roasting dish and into the oven set to 140°C/Gas mark 1.
Add the sugar, and stir in until dissolved.
Heat the jam quickly until it reaches a setting point. Use one of our setting point tests.
When a set has been reached, allow to cool for a few moments and then spoon into the jam jars, using a jam funnel. Seal the lids - take care, as the jam and jars will be extremely hot.
Allow to cool and listen for the lids to pop. Store in a cool place, but start enjoying straight away!