See Sowest -20ºC or recipe. * Cut spareribs into serving sized pieces. Prepare Spicy Texas Barbecue Sauce and set aside. Heat oven to 160ºC . Place pork spareribs, meaty sides up, on rack in shallow roasting pan. Place lemon and onion slices on pork. Cover and bake for 2 hours. Pour 2 cups of the Spicy Texas Barbecue Sauce over pork. Bake uncovered, brushing with the sauce 2 or 3 times, until done, about 2 hours longer. Heat any remaining sauce and serve with the pork spareribs.