In a large saucepan, combine sugar and cornstarch. Gradually stir in water until smooth. Bring to a boil over medium heat; cook and stir for 2 minutes or until thickened. Add blueberries and cinnamon stick; return to a boil. Remove from the heat. Stir in orange juice concentrate until melted. Cover and refrigerate for at least 1 hour. Discard cinnamon stick. Garnish with sour cream if desired. |
