This recipe courtesy of Williams-Sonoma.
This sauce is fabulous drizzled over ice cream. For a chunky sauce, do not blend the mixture in a blender or food processor. Instead, pour the syrup over the berries as directed and stir gently to mix without crushing too many berries.
To make strawberry sauce, substitute frozen strawberries in light syrup for the raspberries.
Adapted from Williams-Sonoma Collection Series, Ice Cream, by Mary Goodbody (Simon & Schuster, 2003).