National symbols of Ireland, the Republic of Ireland and Northern Ireland with Jameson Irish Whiskey and Tullamore Dew the main whiskey brands. Poitín, made from potatoes and with an alcohol content of up to 90% ABV, is the traditional Irish moonshine, brewed illegally since 1661, when a duty was placed on whiskey and other spirits were made illegal. According to one guidebook, ""If you see a product labelled "poteen" in an airport or a bar, it's simply a white duty-paid Irish schnapps. By definition, poteen is illegal and can't be sold."" Stout, a dark beer made using roasted oats or barley, is the national beer, with Guinness heavily promoted as a
Irish whiskey in the share of Irish duties paid on legal spirits in the late 1700s. In 1770, whiskey only accounted for 25% of the total duty on spirits received by the exchequer, while duty on imported rum accounted for 51%, with the remainder divided equally between brandy and gin. However, by 1790, only twenty years later, whiskey's share accounted for 66%. As a consequence of this increased demand, some distillers prioritized quantity over quality, to the detriment of their product. This prompted parliament to pass an Act in 1759 prohibiting distillers from using any ingredient other than malt, grain, potatoes or