I was going to grill some lamb kebabs last night and I wanted the temp to be around 550F. So I lit the Egg and it seemed to be stabilized at 550F using the slide daisy top wide open and the bottom vent also wide open. I went inside to finish a couple of last minute things, went back outside and to my surprise the temp had jumped to 720F and stabilized there.[p]The lump was fairly good size and came up to about 3/4 of the way to the top of the fire box. There was no ceramic mass of any kind in there, just the grate.[p]In the past, I have read (and preached myself) that you couldn't get more that about 550F using a slide daisy top. I have proved myself wrong...again. In looking back, most, if not all, the times I used the slide daisy wide open was with some fire bricks and maybe a pizza stone. I never just let her rip in a clean configuration.[p]I would be interested if anyone else has been able to get 700F plus with the slide daisy top.