Steep tea bag in 1/2 cup (125 mL) boiling water, 5 min. Remove bag, strain well and discard.
Fill a tall glass halfway with ice and pour in lemonade. Top with steeped tea and stir. Garnish with a lemon wedge, if desired.
A great drink for parties, serve it in a pitcher garnished with lemon slices or fresh herbs and berries. Add honey to mellow the tartness.