The most important thing about cooking ribs well is to cook them low and slow. Before you start, remove the membrane so you can get the seasoning on both sides of the meat and to assist in rendering the fat off. Mix together the Butt Rub and Bacon Salt and liberally apply them to to the rack. Then cook on a BBQ making sure you're using indirect heat at about 100°C. After an hour mist them with the juice. At this temperature, spare ribs take about 5 hours and you should glaze them with the BBQ sauce 20 minutes before they are done. Delicious!