I think this looks like the right recipe. I found/re-found it here
http://deliciouslivingmag.com/food/recipes/dl_recipe_830/ Grilled Chicken with Blueberry Sauce
(Serves 6)
2 cups fresh blueberries
1/4 cup balsamic vinegar
3 tablespoons honey
3 tablespoons ketchup
1/2 teaspoon garlic powder
1/2 teaspoon ground ginger
2 pounds boneless, skinless
chicken breast or thigh meat
Salad greens or cooked basmati rice (optional)
1. Place blueberries, vinegar, honey, ketchup, garlic powder, and ginger in a medium nonstick pan. Bring to a low boil. Reduce heat and simmer 10-15 minutes, until slightly thickened. Remove from heat and cool. Transfer to a blender and purée until smooth.
2. Pour 1/3 cup of the blueberry sauce into a zip-top plastic bag. Add chicken, turn to coat, and marinate in refrigerator for at least 30 minutes.
3. Preheat grill. Remove chicken from marinade and grill until cooked throughout, about 7 minutes per side. Warm remaining sauce and serve with chicken over mixed salad greens or basmati rice, if desired.