advoca said:Surely it is not a matter of whether the grinder is ceramic or steel, it is a matter of the serrations. Obviously steel is useless for a salt grinder (ever tried it! The steel interacts.) But the serrations for a salt grinder and a peppercorn grinder are usually different.
In my neck of the woods grinders are sold in pairs, one for salt and the other for pepper. That is the best way to buy such gadgets, IMHO.