- 4 lbs (1.8 kg) plums
- 1 pint (575 ml) water
- 4 lbs (1.8 kg) sugar
- Wash and wipe the plums. Cut in halves.
- Put into a pan with the water and simmer gently until the fruit is soft.
- Test for pectin.
- Add the sugar, stirring until the sugar has dissolved.
- Bring to the boil and boil rapidly until the jam sets when tested, removing the stones as they rise to the top.
- Remove the scum.
- Pot and seal while still hot.
Makes around 6 lbs (2.7 kg) of jam.