This limited-edition release is part of The Glasgow Distillery's Small Batch Series, an ongoing collection of bottlings that highlight the versatility of whisky produced at this modern urban distillery. The Small Batch Series showcases the distillery's three whisky-making styles—peated, unpeated, and triple-distilled single malts—exploring a variety of new and exciting cask maturations.

The Glasgow 1770 Islay Cask Finish is a six-year-old whisky, crafted from a single finishing cask. It was first matured in a virgin American oak cask from Kelvin Cooperage, Kentucky, before undergoing a secondary maturation in a refill bourbon hogshead sourced from an Islay distillery.