Ribs, Baked with BBQ Sauce

Take 9 pounds of spare ribs, and trim all excess fat. Create rub with salt, cumin, oregano, black pepper, cayenne pepper, and crushed red pepper; place all ingredients into mortar and grind smooth. Add a small amount of apple cider vinegar to mortar to turn spices into paste. Rub all over ribs. Roast at 250-270 F for three hours covered. Uncover, remove excess fat, and baste in BBQ Sauce (see previous post for recipe). Roast another hour uncovered. Re-baste and serve.