Pour 4 cups boiling water over tea bags and mint leaves. Cover and steep 3 minutes; remove and discard tea bags and mint. Stir in sugar until dissolved. Stir in lemonade concentrate and 4 cups cold water; chill. Serve punch over ice. Garnish, if desired.
I love to make this for special occasions. I substitute Splenda for the sugar and it still turns out great (there's still a lot of sugar/calories in the lemonade). Guests always love this.