Preheat your oven to 325°F.
Lay the chunks of pork on a cutting board and rub them all over with salt to ensure they're fully seasoned.
Place the pork in a deep baking dish.
Add the water, orange halves, bay leaf, and lard around the meat.
Cover the dish tightly with foil or a lid and bake in the oven for about 2 hours, until the pork is tender.
Increase the oven temperature to 425°F.
Uncover the pork and let it continue cooking for 30 minutes to crisp up the edges.
Let the pork rest for a few minutes before serving.
Shred it using two forks for a classic carnitas texture.