Grilled Salmon with Blueberry Sauce

Name: Grilled Salmon with Blueberry Sauce
Ingredients: 4 (4 ounce) fresh or frozen skinless salmon fillets; 1 ½ cups fresh or frozen blueberries; ¼ cup finely chopped onion; 1 clove garlic, minced; 1 teaspoon olive oil; 2 tablespoons balsamic vinegar or cider vinegar; 1 tablespoon packed brown sugar or brown sugar substitute (see Tip) equivalent to 1 tablespoon brown sugar; 1 teaspoon grated fresh ginger; ½ teaspoon finely shredded lemon peel; Cooking spray; ⅛ teaspoon salt; ⅛ teaspoon ground pepper; 1 teaspoon Chopped fresh chives