1. Combine sugar and spices. Liberally coat the meat with the spice mix on all sides. Allow to rest in the refrigerator for two hours or overnight.
2. Preheat oven to 275 degrees Fahrenheit (135 degrees Celsius). Prepare a heavy baking sheet and cover with heavy-duty aluminum foil and Gefen Parchment Paper.
3. Place the ribs on the baking sheet and place in the oven. Bake uncovered for three hours for individually cut short ribs, or four to five hours for attached ribs or flanken, turning once midway. The meat is ready when it has pulled away from the bone and is fork-tender.