I have a customer that only eats "organic" food and she is very cautious about everything. When I did her show, I shared with her guests that buying block cheese was better than the shredded. For one it's more economical and another reason (tip I got from here) is that there is a preservative added to shredded cheese that keeps it from clumping. Well, she did her own research on this and she just got back to me saying that there was nothing to back me up on this, therefore, it is considered safe and now she wants to return the Ultimate Grater because she won't be needing it. Do any of you have something to back up the added preservative/wax or whatever it was said that the shredded cheese has?