I have a possible issue with some whole grain rye that I have stored. It was triple clean whole grain. I put it directly into some clean and dry juice bottles (3 quart Wal-Mart Grape Juice bottles). I also put some into a couple of dry food "pitchers". THis wasn't intended for long-term storage (years), just long enough for us to use up a bulk purchase. There are small pockets of something white here and there in the containers. It is a powder because it disappears if you try to collect some of the grain that is around it. There is much more of it in the "pitchers" than in the more tightly-sealed bottles, especially at the bottom. Internet searching has been of no help. Of course, if in doubt, throw it away, but I don't want to throw it away if this is just dusty stuff that's already in the grain just collecting somehow. Has anyone had something like this happen to them?