Tom wrote > Is that gasket going to be toxic, or is it inert? > Hi Tom, normally when you use a food processing instrument, special made for food processing it is not allowed for manufactores to use toxic materials or materials which can get contamitated by fungus etc... Here in The Nteherlands it's very strikt controlled by the govenment and I think in the US its called the F&D administration?. In you case about the gasket, I would absolutely not be worried... its not a complete tire you ground in there so probably you will never notice it during usage of the powder.... or may be it will leave some 'burned rubber' marks in the pot the day after ;-) Hot regadrs Rob NL