The 18th & 19th centuries there were the glory days of the Irish whiskey industry, with over 200 licensed distilleries in all of Ireland. There were also countless unlicensed distilleries at the time, producing diverse styles of poitín, whiskey, gin, and even absinthe. But through a series of unfortunate events, the Irish whiskey industry dried to a trickle in the 1970s.

Glendalough Distillery is part of a revival of this Irish heritage. Their philosophy is "to make innovative spirits while staying true to the tradition and heritage of our ancestors." Glendalough started out making poitín — the traditional Irish distillate made in small pot stills. From there they seamlessly transitioned to whiskey production, and most recently, seasonal, wild botanical gins. All of their spirit production is handmade.