This 100% Scotch Whisky Is Aged For At Least Thirty-Six Months And Blended To Provide Truly Superb Flavor.Duggan's Dew is a brand of blended Scotch that was popular before Prohibition, and when found in the states during that time, was known as "The Real McCoy." Importing began again in the 1940s. The chosen name O'Kirkintilloch is an inside joke referring to the Scottish town of Kirkintilloch, which was known for being dry.