Devil's buttermilk

Noun

 * 1)  Whiskey.
 * 2) * 11 May 2005, Ian Paisley, House of Commons Hansard Debates, Hansard:
 * I am glad that you, Mr. Speaker, are in a minority, because we both refrain from indulging in the stronger waters—or the Devil's buttermilk, as I sometimes call it.