Grilled Pork Skewers With Blueberry Barbecue Sauce

½ cup olive oil ½ cup lemon juice ¼ cup chopped fresh mint 4 cloves garlic, minced 8 ears fresh corn 2 tablespoon olive oil 4 cup fresh blueberries

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If using wooden skewers, soak in water for 30 minutes; drain before using. Refrigerate remaining sauce in an airtight container for up to 3 days.