1 1/2 c. blueberries
2 c. water
1/2 c. sugar
1 tbsp. lemon juice
1 (2 inch) cinnamon stick
1/4 c. cornstarch
1/4 c. water

In medium saucepan, stir together blueberries, water, sugar, lemon juice and cinnamon stick. Bring to boil. Reduce heat. Simmer uncovered 15 minutes. Press mixture through a sieve, then return liquid to saucepan. Bring blueberry mix to a boil, then reduce heat.

Combine cornstarch and water, stir well. Add to blueberry mix and cook until slightly thickened. Chill 6-8 hours. Serve with dollop of sour cream.