Irish whiskey must be distilled and aged in Ireland. Most undergo triple distillation, resulting in a smoother spirit compared to typically double-distilled Scotch. It often uses a mixture of malted and unmalted barley, with other grains permitted. Irish whiskey must be aged for at least three years in wooden casks. Peat is rarely used in the malting process, generally resulting in an absence of smoky flavours common in many Scotch whiskies.

Jameson is internationally recognised for its smooth, approachable blended whiskey. The Spot whiskeys (Green, Yellow, Red, and Gold) are highly regarded single pot still whiskeys, offering rich, complex flavours. Redbreast is acclaimed for its full-bodied, sherried character. Slane Irish Whiskey has gained attention for its triple-casked blended whiskey, offering a smooth yet complex profile. These brands represent just a fraction of the diverse Irish whiskey landscape.

The Irish whiskey industry has experienced a boom, becoming one of the fastest-growing spirit categories globally. The number of distilleries has increased dramatically, from just a handful to dozens operating or in planning across Ireland. This growth has brought innovation in production methods and cask finishes, leading to a wider variety of styles. The industry has also invested in visitor experiences, with many distilleries opening to tourists. Despite rapid growth, producers have maintained a commitment to quality and tradition while pushing boundaries.