Cran-raspberry sauce

This is a favorite Thanksgiving side in my family, and it's good with ice cream too.

1 Package fresh cranberries
1 cup sugar
3/4 cup water
1 bag frozen raspberries

Boil the water in a large pot. Disolve sugar in water and return to a boil. Add the cranberries and simmer approximately 10 minutes until most of the berries have burst. Remove from heat and stir in the raspberries. Cool at least 1 hour. Sauce will thicken.