In a bowl, mix together the olive oil, garlic, Adobo, lemon juice, sazon, oregano and black pepper; set aside.
¼ cup olive oil, 1 tbsp garlic, 2 tsp adobo seasoning, 2 tsp lemon juice, 2 packets sazón, 1 tsp oregano, ¼ tsp black pepper
Using a small, sharp knife, make a cut on the side of the roast where the skin meets the flesh. Continue cutting, separating the skin from the flesh, leaving one end of the skin attached. Using the knife, make ½” deep incisions in the flesh, under the skin.
1 pork shoulder
Place the pork on a tray. Using your hands, rub the spice mixture over the flesh, pushing some of the mixture into the cuts. Place the skin on top of the meat; wipe the skin clean. Rub skin with salt. Cover tray with plastic wrap; transfer to the refrigerator to marinate for at least 4 hours, or overnight.
1 tsp salt
Heat oven to 350°F. Transfer pork, skin side-up, to roasting pan; bring to room temperature, about 1 hour. Pat the skin dry. Cover pan tightly with aluminum foil.
Cook pork until meat is fork-tender and internal temperature registers 145°F, 3 - 3½ hours; discard foil.
Increase oven to 450°F. Cook pork, uncovered, adding water in ¼ cup measures if pan becomes dry, check the pan every 10 minutes. Cook until the skin is brown and crisp, 20 - 35 minutes.
Transfer pork to cutting board and let it rest 20 minutes. Remove the skin and cut it into pieces. Drain fat from drippings. Cut meat from the bone. Serve with skin and pan juices.