In a large mixing bowl, combine ground pork, minced onion, salt, ground black pepper, egg, and bread crumbs. Mix thoroughly.
Scoop about 1 to 2 tablespoons of mixture and form into a ball shaped figure. Set aside.
Heat a frying pan then pour-in 6 tablespoons of cooking oil.
When the oil is hot enough, pan-fry the ball-shaped mixture until the outer side turns brown.
Once done, turn off the heat and transfer the fried meatballs on a serving plate or bowl. Set aside.
Heat a separate cooking pot then pour-in remaining 2 tablespoons of oil.
When the oil is hot enough, sauté the garlic.
Add the quartered onion, sliced carrot, and bell peppers then cook for 2 minutes.
Add pineapple chunks and cook for 1 minute.
Put-in the tomato ketchup, brown sugar, and vinegar then stir.
Pour-in water and let boil.
Add the cornstarch diluted in water and cook until desired thickness is reached.
Turn off heat then ladle the sauce over the pan-fried meatballs.
Serve hot. Share and enjoy!