Step #2 roughly chop the apples(including the skin & core) & put them in a large heatproof bowl add the cider & lemon rind, then partially cover the bowl with microwave clingfilm.
Step #3 microwave on high for 10-12 mins until the apples are soft, stirring twice during cooking.
Step #4 2.
Step #5 puree the apples in a food processor/blender then pour this into large nylon sieve placed over a bowl leave to drip for 2 hrs set the drained pulp aside for the apple & rum spread measure the apple juice there should be about 1/2 pint but if necessary make up to half a pint with some cold water 3.
Step #6 pour the apple juice into a medium sized heatproof bowl & stir in the sugar microwave uncovered on high for 8-9 mins until a tsp of the jelly dropped on to a chilled saucer forms a skin after 1 min carefully pour the jelly into a clean warm jar and cover with a waxed paper disc allow this to cool then cover with a lid.