The Heather Julep recipe: lightly muddle the mint leaves in the base of the shaker. Add whisky, liqueur and sugar syrup and shake with ice. Finish your Heather Julep and fine strain into glass filled with ice. Churn the Heather Julep using a bar spoon and top the glas with crushed ice and churn again. Garnish your Heather Julep cocktail with mint spring and straws. Enjoy!