Three slabs of spares,trimmed St.Louis style. I'll use the rib tips in some cheesy potatoes I'm going to fix for a cookout tomorrow. They tasted as good as they look. Enjoy! Rubbed with TexasBBQRub and turbinado sugar. Three pieces of apple wood for a light smoke flavor. Ribs on the lower rack, the rib tips on top. Kept the cooking temperature between 250 and 260, they were done in about 5 hours. Put my homemade sauce on them during the last 45 minutes or so.