Slow-roasted pork leg seasoned with Mexican spices is a Christmas Eve dinner staple. This high protein, family celebration dish is a fresh, succulent centerpiece for holiday feasts.
Preheat your oven to 325°F. Peel the garlic and mash with salt in a mortar to form a paste; extract juice from the oranges.
In a small bowl, combine the mashed garlic, orange juice, olive oil, oregano, cumin, paprika, and pepper to form a marinade.
Score the pork leg skin in a criss-cross pattern. Rub the marinade thoroughly over the pork, getting into the cuts for deeper flavor penetration.
Place sliced onions on the bottom of a large roasting pan. Set pork leg on top; cover tightly with foil to retain moisture.
Roast in the oven for 4 hours, basting every hour with pan juices. Uncover, increase heat to 400°F for the final 45–60 minutes to crisp the skin, watching closely to achieve golden color without burning.
Let the pork rest for at least 20 minutes before carving, ensuring juices are reabsorbed for succulence.