Island Meatballs

Ingredients

• 1 pound lean ground beef
• 1 pound lean ground pork
• 1 cup breadcrumbs
• 1/2 cup milk
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon sea salt
• 1 teaspoon black pepper
• 1/2 teaspoon chili flakes, optional
• 1 (20-ounce) can pineapple chunks, juices reserved
• 1 cup barbecue sauce
• 1/4 cup soy sauce
• 1/4 cup rice vinegar
• 1 tablespoon ginger, grated
• green onions, optional, to taste, chopped, to serve