On 2017-04-10 12:47 AM, Wayne Boatwright wrote:

>> Our griddle get used at least 4 or 5 times a week.
>
> I'm sure you're very careful, Ed, but most manufacturers (mine
> included) recommend against using aluminum pans, griddles, etc., on
> glass top stoves as aluminum can leave metallic marks on the glass
> that usually cannot be removed.

Cast iron also left marks on our glass top stove.