place the apples and 3 rosemary sprigs into a pot with the vinegar and bring to a boil over a moderate heat

boil for 5 minutes then strain off the liquid and remove the rosemary sprigs

dissolve the sugar over a low heat and then bring to the boil

boil rapidly for 10 minutes

put a sprig of rosemary into a sterilized glass jar

pour in the jelly and seal