Which whiskeys are gluten free?

Answer 1

All of them. Whiskey is a distilled alcohol which is then blended with water and aged in wooden barrels. Even alcohols made from wheat have no gluten, the gluten is removed by the distilling process. Some unfiltered beers might contain gluten in the dregs, but most production beers are filtered, which removes any unreacted particles. You are generally safe to assume alcoholic drinks contain no gluten.