Ham Balls

Bahan-bahan (12 porsi)

• 1 pound ground ham
• 1 pound ground pork
• 1 large egg beaten
• 1 cup graham cracker crumbs
• 1/2 cup milk
• Salt and pepper to taste
• 1 teaspoon chopped parsley
• 1 1/2 cup ketchup
• 1 cup brown sugar
• 1 teaspoon mustard
• 1/2 cup apple cider vinegar