Prepare the Dough: In a large pot, combine the corn dough, water, 2 tablespoons of pork lard, the annatto (bija—this gives it the signature yellow color), and salt. Cook over medium heat, stirring constantly to prevent lumps, until you achieve a soft, pliable, and cooked dough. Set aside to cool slightly.
Make the Filling: In a large skillet or pan, heat the remaining pork lard. Sauté the onions (red and green), parsley, oregano, and garlic to create a base sauce. Add the meats (pork ribs, hen/chicken, and bacon) to the pan. Sauté everything together for about 15 minutes to seal the flavors and partially cook the meats.
Assemble the Hallaca: Take a sheet of plantain leaf and grease it lightly with oil or lard. Take a portion of the cooked dough and form a ball, then flatten it out on the leaf to create a rectangular bed of dough. Place a generous portion of the meat filling in the center. Top with a little more dough to seal it.
Wrap and Cook: Fold the plantain leaf over the dough to create a rectangular package, ensuring it is completely sealed so water doesn't get in. Tie it securely with kitchen twine (cabuya) in a grid pattern. Drop the parcels into a pot of boiling water and cook for 1 hour.
Serve: Remove from the water, cut the string, peel back the leaves, and serve hot.