This short video provides an simple and informative explanation of how corn gets transformed into Jack Daniel’s Tennessee Whiskey.
http://www.youtube.com/watch?v=JfsQEVDxuFI
Ignore the gibberish about “secret ingredients,” and the business about filtration getting rid of “impurities” is a bit cockamamie, for it is impurities that make alcohol taste like something. (I.e., if you filter away all the impurities you end up with tasteless, odorless pure alcohol.) One one thing you do not see is the aging of the whiskey, which produces much of a whiskey’s flavor.