After a few weeks regularly not hot use on a ceramic hob is the pan base a significant bulge in the middle to the top. The promised Planstabiltät is thus with me unfortunately not available. Roast with fat or oil is therefore not feasible because of the "hot spot" and a few cm to Him with me unfortunately remain completely greaseless it but then the edge swims in oil. The temperature distribution is of course anything but uniform. I will return the pan because of this serious lack again.