Decided to have an impromptu cook Friday night since the end of summer is nearing. We had my brother and sister in-law over and featured a 4 pound, 3 inch thick Porterhouse served family style. I seared this at 650 degrees with the dome open for 90 seconds per side and then let it rest for 20 minutes. I quelled the fire down to 400 degrees and added some Mesquite chunks for the roast. Roasting time was 7 minutes per side for a perfect medium rare after a 10 minuute rest. Served with baked potatoes and garlic bread. Ahhh, indian summer in the Northwest.