Quick Plum Preserves

Directions

1. 1
   Coarsely chop plums and stir together with sugar, water, and cinnamon stick in a 2-quart heavy saucepan.
2. 2
   Simmer, uncovered, stirring occasionally (more often toward end of cooking to prevent sticking), until thickened and reduced to about 2 1/2 cups, 45 minutes to 1 hour.
3. 3
   Discard cinnamon stick and cool preserves.
4. 4
   Transfer to an airtight container and chill, covered.