The Irish whiskey is the fastest-growing type of whiskey globally. Irish whiskey is considered one of the best spirits in the world. It is made from unmalted barley and distilled for three years after that. When distilled, it goes through a fermentation process where other enzymes help to digest and metabolize the alcohol. It is then triple-distilled for better taste and smoothness. Irish whiskey is known to mix well with other drinks and is smoother than other whiskeys.