Today, Green Spot Single Pot Still Irish Whiskey continues to be crafted in the heart of Ireland. The whiskey is made from malted and unmalted barley, which are milled and mashed before being distilled through a traditional pot still. Following distillation, the whiskey is matured in a combination of American oak casks that were previously used to mature bourbon (75%) and European oak casks that were previously used to mature sherry (25%). Once the whiskey has matured for eight to nine years, the casks are blended together and brought to proof.