How to Make It
Whisk together tea, sugar, lemon juice, and orange zest in a medium bowl until sugar dissolves; pour into a 9- x 5-inch loaf pan. Freeze until ice crystals form, 4 to 5 hours, stirring every hour. Divide mixture evenly among 6 glasses. Garnish with lemon slices and mint. If desired, top each serving with a shot of chilled bourbon or orange liqueur.