Recently, I've seen salt grinders sold in stores. I understand that freshly ground pepper has a plus over pre-ground pepper in terms of freshness and strength. However, salt to me seems like a mineral, as opposed to pepper which is, well, a pepper from a plant. So, is there any plus in terms of taste and freshness to using freshly ground salt out of a salt grinder? (I am obviously not talking about special flavored salts which contains other spices and herbs which would benefit from being freshly ground)