To make the broth: Heat the oil in a large, heavy pot over medium heat. Brown the onions and the garlic. Add salt, pepper, and turmeric, and sauté for 20 seconds. Add the water, cover, and simmer for 20 minutes over medium heat.
To make the meatballs: In a mixing bowl, combine all the ingredients for the meatballs. Knead lightly and, with moist hands, shape int