Moonshine

Moonshine, white lightning, mountain dew, hooch, and Tennessee white whiskey are terms used to describe high, proof distilled spirits, generally produced illicitly.  Moonshine is typically made with corn mash as the main ingredient. The word "moonshine" is believed to derive from the term "moonrakers" used for early English smugglers and the clandestine (i.e., by the light of the moon) nature of the operations of illegal Appalachian distillers who produced and distributed whiskey. The distillation was done at night to avoid discovery.  Source