- Irish whiskey must be distilled and aged in the Republic of Ireland or in Northern Ireland.
- The contained spirits must be distilled to an alcohol by volume level of less than 94.8% from a yeast-fermented mash of cereal grains (basically beer) in such a way that the distillate has an aroma and flavor derived from the materials used.
- The product must be aged for at least three years in wooden casks.
- If the spirits comprise a blend of two or more such distillates, the product is referred to as a "blended" Irish whiskey.
And, after all that, did you know that the Irish drink more tea per capita than any other nation on earth?