Corn Mash William Lawrence Sr Omnibit 12-13-18 Bourbon must be made from 51-percent corn mash. So why isn’t that corn whiskey? Corn whiskey requires an 80 percent corn mash. OK, Bourbon must also be made in the USA. Corn mash William Lawrence Sr Omnibit 12-13-18 Share this:PrintFacebookTwitterTelegramMeWeWhatsAppPinterestLinkedInParlerGabRedditEmailMorePocketTumblrLike this:Like Loading... Related