Grilled Pork With Balsamic-Red Raspberry Reduction - Washington Red Raspberries

Ingredients

• 1 cup frozen unsweetened red raspberries
• 1/3 cup balsamic vinegar
• 1/4 cup finely chopped onion
• 2 medium garlic cloves (minced)
• 1 tablespoon granulated sugar
• 1/2 teaspoon coarsely ground black pepper
• 1/4 teaspoon salt
• 1/8 teaspoon dried pepper flakes
• 1 pound pork tenderloin