Weigh and wash the 1400 g (3 lb) apples.
Chop the apples into even sized pieces. If the apples are large then cut into ⅛, smaller apples into halves or quarters. Do not peel or core the apples.
Put the apples and the 1400 ml (3 pints) water into a large pan.
Simmer the apples until they become a puree.
Place your jelly bag over a bowl.
Ladle the apple puree into the jelly bag.
Secure the jelly bag with string and hang it over a bowl. I hang mine from the handle of a wall cupboard. A broom handle secured across two chairs will also work. Leave the juice to strain through the bag. Don't be tempted to squeeze or your juice and your jelly will be cloudy.
Measure the juice and return it to the large pan.
Add appropriate amount of sugar for the volume of liquid. You will need 450 g (1 lb) of sugar for every 600 ml (1 pt) juice. Stir until the sugar is dissolved.
Add the freshly squeezed juice of 1½ lemons.
Boil rapidly for 15 minutes, then test for set using the wrinkle test (see notes).
Scoop off any froth with a large spoon and use a ladle and jam funnel ( if you have one) to fill the sterilised jars and seal with lids.
Serve Apple Jelly on bread, scones or pancakes. Or use it as a glaze on pork or ham.