Hearty Meatball and Vegetable Soup

Ingredients:

1 pound (450g) ground beef

½ cup breadcrumbs

¼ cup chopped onion

1 egg

Salt and pepper

1 tablespoon soy sauce

For the sauce:

½ cup pineapple juice

3 tablespoons brown sugar

2 tablespoons vinegar

2 tablespoons ketchup

1 tablespoon cornstarch + 2 tablespoons water (for consistency)

Vegetables:

Red, green, and yellow peppers (chopped)

Onion slices

Pineapple pieces (optional)