My wife accidentally had put a hot pot from the burner to the countertop and immediately saw what she did and removed it, but it left a partial 'burnt' bottom on it. I tried to remove the stain with some bleach and water mixed, then just bleach and finally a Brillo soap pad...all with no luck. I even used the Bars Keeper Friend. Its just a stain, not a penetration. Anyone here have other suggestions how to get rid of that stain? Thanks