After the malted and unmalted barley is milled, the mash is created and filtered through a Lauter Tun. The resulting wort is fermented with the help of dried yeast. Then, the wash is triple-distilled in 3 separate copper pot stills, with only the heart of the distillate making it into the product. Finally, the new whiskey is matured for at least 2 years in American virgin oak and various other casks such as sherry, Malaga, and refill bourbon casks. While their own spirit is maturing, they have released Keeper's Heart Irish + American Whiskey, a blend of 3 whiskeys: a smooth and delicate Irish grain whiskey, a rich and complex Irish pot still whiskey, and a spicy and bold American rye, all of them 86-proof and 4 years of age. The whiskey has won a Gold Medal at the 2022 edition of the San Francisco World Spirits Competition.