FOR THE MEATBALLS – ½ pound ground beef, [113 gr] – 1 egg (large) – ½ cup breadcrumbs, may not need all – 1 tablespoon onion powder – 1 teaspoon freshly cracked or ground black pepper – 1 tablespoon soy sauce – 1 tablespoon annatto (bija, achiote) powder – 1 teaspoon salt – 1 dozen quail eggs, hard-boiled, peeled (see notes)
FOR THE SAUCE – 1 cup tomato sauce – 2 teaspoons garlic salt, or more, to taste (see notes) – ½ tablespoon chili flakes – 1½ tablespoons brown sugar – 2 tablespoons vegetable oil