Fill a copper mug (or a rocks glass) with ice. Pour the whiskey and lime juice over the ice, then fill glass with ginger beer. Garnish with a lime.
Description
A riff on the Moscow Mule, the Blarney Stone replaces the vodka with Irish whiskey. Add fresh lime juice and ginger beer and you are good to go.
History
The Blarney Stone cocktail is a classic Irish drink dating back to the early 20th century. It is believed to have originated in Ireland and gained popularity in the United States and Europe.