Preheat the oven to a medium temperature (160°C).
Make diamond-shaped cuts on the pork leg's skin. Rub in the regular salt, ensuring it penetrates the cuts.
Place some cloves on the diamond vertices as per your taste.
Grease a roasting pan with olive oil. Position the pork leg with the skin side up and set aside.
In a mortar, combine peeled garlic cloves, grill salt, pepper, and oregano. Crush until you get a smooth paste, then add the orange or lemon juice.
Cover the pork leg with this marinade and place it in the oven.
Remember, cooking should be slow and prolonged, approximately 3 hours.
Every 30 or 40 minutes, baste the pork leg with the juices that accumulate at the bottom to infuse the flavor. And you're done.
You can serve your roasted pork leg with rice or a lettuce, tomato, and onion salad. It's all up to your taste.