2 c. blueberries
1/2 c. water
6 tbsp. corn syrup
1 tbsp. lemon juice
1 tbsp. butter

Simmer all ingredients but butter and 1 cup blueberries for 10-15 minutes. Remove from heat. Add butter, stir and let cool slightly. Stir in rest of blueberries. (For a variation, try adding 1/8 teaspoon cloves.)