For approximately 250ml sauce you need
3-4 large red plums
Roughly slice plums and discard the stone (pip)
Place all the ingredients in a saucepan and bring to the boil, whilst stirring to dissolve the sugar.
Boil for 2-3 minutes to allow the fruit to cook and disintegrate.
Blend until it is smooth.
Serve hot with a baked pudding e.g. plum crumble
or chilled with any plum based dessert or ice cream.