Chill your glasses while the tea mixture chills. You can also shake the cocktail with ice before serving, but strain the ice before you pour.
1/2 cup sugar
1/2 cup water
4 Earl Grey tea bags
1 (1-ounce) package fresh mint (about 1 cup)
1 1/4 cups bourbon
1/3 cup fresh lime juice
1 3/4 cups chilled sparkling wine
Mint sprigs (optional)
How to Make It
Combine sugar and 1/2 cup water in a microwave-safe bowl; microwave at high 3 minutes, stirring until sugar dissolves. Add tea bags and mint to sugar syrup; steep 20 minutes. Discard tea bags and mint. Stir in bourbon and juice; chill. Pour tea mixture into a pitcher; stir in sparkling wine. Garnish with mint sprigs, if desired; serve immediately.