A Manhattan variation calling for Irish whiskey instead of bourbon or rye, mixed with equal parts sweet vermouth, orange liqueur and a dash of orange bitters...
I agree with Fernando, definitely an orangey drink. Used Jameson Black Barrel, Cointreau, noilly prat red vermouth. Initially I forgot the orange bitters and that really made a difference. I have Gary Regan’s book The Joy of Mixology where he says they invented the Dubliner for St Patrick day 1999. Definitely recommend.