Preheat the oven to 350 degrees F.
Combine the annatto seeds, vinegar, olive oil, oregano, coriander, cumin, black pepper, chiles and garlic in a food processor. Blend until smooth. Rub the paste all over the pork shoulder. Lay one banana leave in the bottom of a deep hotel pan, then place the rubbed pork on top. Add the orange and lime juices, then add the salt. Lay the remaining banana leaf over top. Cover with foil and cook in the oven for 5 to 6 hours.
Remove the pork and allow to cool. Remove the fat and bone and shred the meat. Then serve while hot, it's ready to eat.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.