The Leprechaun cocktail consists of Irish Whiskey and Tonic Water. The drink is said to have a sweet and slightly floral taste. The history of the Leprechaun cocktail is unclear. Some say that the drink was created in the early 1900s, while others claim that it originated in the 1970s. Regardless of its origins, the Leprechaun cocktail has become a popular choice for those looking for a refreshing and easy-to-make drink. So, if you're ever in the mood for something sweet and refreshing, be sure to try a Leprechaun! You might just find that it's your new favorite cocktail!