Prepare the rim of a cocktail glass with sugar (rub lime around the rim; dip into sugar).
Fill the glass half-way with ice.
Add iced tea, Tuaca, and agave into a shaker. Shake and pour over the ice.
Squeeze 1/4 of a lime into drink; stir.
Garnish with lime wedge and serve!
Notes:
We used Harry & David's Bing Cherry Black Tea for this recipe, but you can easily substitute any variety of black tea, from Earl Grey to Oolong, depending on your preferences.