I have the pan today undergo the same the first time a small hardness testing - without first bake the pan fried. In the description is clear that a burn is not necessary to me but the saleswoman recommended in my major professional pan, to do just that. She said Fried eggs would work well only after repeated use and building a certain patina (the structure of the patina affects only the black enameled pots). Well - the fried eggs were not a problem, could be prima remove from the pan and some residue on the bottom of the pan were removed easily and better than my non-stick pan. What more do you want? I can only recommend to anyone who wants a good all round pan, to look at the gourmet pro pots with black enamel - especially which are also great suitable for braising in the oven for casseroles or ...