Remove the berries from the stalks, rinse and dry them.
Chop the apples, no need to peel or core them
Put the fruit into a pan with the rosemary; add enough water to just cover them. Simmer for 20 mins. Use a potato masher to mash up the fruit
Ladle fruit and juice into a scalded jelly bag suspended over a bowl and leave to drip overnight ... Or if you dont have one, use a cotton tea towel
Measure the juice into a large heavy-based pan and for every 600ml of juice add 450g of sugar.
Heat the juice and sugar over a low heat until the sugar has dissolved completely.
Raise the heat and bring to a rapid rolling boil for 10-15 mins or until setting point is reached.
Pour into sterilised jars, and then seal and can the jars.