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 the style depending on the type of grain used and the distillation process. Traditionally, Irish whiskey was produced in pot stills. Irish whiskeys made in a pot still fall into two categories. Whiskeys made entirely from malted barley distilled in a pot still within a single distillery are referred to as single malt whiskeys, a style also very commonly associated with Scotch whisky. These may be double or triple distilled. Single pot still whiskey is made from a mixture of malted and unmalted barley completely distilled in a pot still within a single distillery. This differs from single malt whiskey