Cut raw pork into 2" cubes and place in large non-stick dutch oven or pot.
Add orange juice, lime juice, whole garlic cloves, ground cumin, salt, and enough water to barely cover pork pieces.
Bring a pot to boil, cover with lid and simmer for two hours. Do not disturb the meat by stirring.
After two hours, remove pot lid and cook meat on medium, stirring occasionally until liquid is all gone and only fat remains.
As meat fries in rendered fat, flip meat every 3-4 minutes until most of the meat is browned.
Taste for salt and pepper.