Here's a couple of recipes that might be of use to you
Plum sauce:
1kg plums, unpeeled, pitted, sliced
60ml water
50g sugar
A pinch of ground cinnamon
Method:
Combine plums and water in a pot or pan. Bring to a boil over medium heat, stirring often.
Reduce heat, cover, and bring to a simmer. Cook for about 10 minutes or until plums are soft, stirring often.
Process cooked plums in a blender until smooth. Return to pan and add the sugar and cinnamon and bring to a boil.
Fill sterilized jars with sauce, leaving a bit of head space. Top with lids.
Place jars, slightly apart, in a boiling water. Bring water to a simmer and cook for 15 minutes.
Take jars out of the water and set aside to cool. Store in the refrigerator and use within one month.
Plum & Port sauce:
100g sugar
120ml water
500g plums, pitted, chopped
2tsp grated orange zest
2tbsp port
1tsp lemon juice
A pinch of ground cinnamon
A pinch of salt
Method:
In a large saucepan combine the sugar and water. Cook over medium heat and bring to a boil, stirring, for 5 minutes.
Reduce heat and add the plums and the zest. Cook for 10 minutes, or until the plums are soft.
Remove from heat and cool slightly. Transfer to a blender and process until smooth.
Stir in the port, lemon juice, cinnamon and a pinch of salt.
Leave the sauce to cool and chill, covered, for 2 hours.