I've been wanting to make BM's cream ale, a mexican lager, and a CAP. My LHBS didn't carry flaked/rolled corn, so I picked up a bag and the local feed store. The question is: Other than the corn itself, there's two other ingredients listed. I'm not really sure what they are, if they're something I want in my beer, etc. The two extras are Propionic Acid (as a preservative) and Ammonium Hydroxide. my google-fu is failing me, so hopefully HBT can come to the rescue. Is this something normal, or are either of these ingredients something I don't want in my beer?