Try this sweet and tangy sauce next time you grill chicken, pork, or tuna. Add some sauce right at the end of cooking, and pass the rest at the table. If fresh blueberries aren't available, use 2 cups of thawed frozen blueberries.
Place all ingredients in a saucepan. Bring to a boil; reduce heat, and simmer 15 minutes or until slightly thick. Remove from heat; cool. Place blueberry mixture in a blender; process until smooth.