When leaving the alembic, Irish whiskey, due to its triple distillation, has a higher percentage of alcohol compared to Scotch whiskey. To be considered an Irish whiskey it is mandatory that its distillation and aging take place in Ireland.
Its ripening goes through resting in oak casks, which are usually used in the production of Sherry, Rum, Brandy or Bourbon. As a rule, its aging period is less than four years but, in most cases, it approaches 10 or 15 years.