Ham balls in barbecue sauce

Ingredients

• 2 eggs, beaten
• 1 1/2 cups soft bread crumbs
• 1/2 cup finely chopped onion
• 2 tablespoons whole milk
• 2 teaspoons dry mustard
• 1/4 teaspoon ground black pepper
• 10 oz ground cooked ham
• 14 oz ground pork
• 3/4 cup packed light brown sugar
• 1/2 cup ketchup
• 2 tablespoons apple cider vinegar