Glendalough Gin is released in dedicated seasonal batches said to be limited to 3,000 bottles. Each of the 4 seasons is represented owing to the "unpredictable Irish weather resulting in an ever changing array of botanicals, berries and fruit." This suggests to us that the year-to-year releases may differ in flavor (and perhaps even botanicals) even if labeled in the same season, implying a true "vintage" gin. The botanicals themselves are at least partially harvested by foraging in the wild in Wicklow County. The spring edition is made with juniper, coriander, angelica, orris, orange, lemon, liquorice, cinnamon, sorrel, beech leaves, blackberry leaves, blackcurrant leaves, dandelion blossom, cicely, cleavers, watermint, birch sap, and pine. This is a wide array of botanicals, a full half seldom seen in any traditional gin.

Glendalough Distillery was opened as an independent craft distillery to "recapture Ireland's lost heritage of great spirit production." It is named for the beautiful Glendalough Valley, which translates as "the glen of two lakes" and named for a valley in Ireland. The labels feature St. Kevin of the 6th century, who lived in a cave in the valley. Legend has it that he was so still a blackbird nested in his hand. It was founded in 2011 by Donal O'Gallachoir, Brian Fagan, Barry Gallagher, Kevin Keenan, and Gary McLoughlin.