Looks like glass ...cuts like glass....but not really glass. Something that sometimes forms in their Cheese. If you find the story of the lady in Mississippi with Kraft Singles cheese slices you can see pics of similar glass.....some kinds of crystals that form.
Kraft had me put some in hot water to see if they disappeared. They did.
Said they were glad we did not eat the food with them in it as they could cut you. They said they would send coupons for replacement.
