Bring 1/4 cup raw sugar and 1/4 cup water to a boil and cook for one minute, until the sugar dissolves. Remove from heat and cool completely.
Cook 1/2 cup lemon verbena leaves in boiling water for one minute. Drain, plunge in ice water, then drain again. Combine the leaves and the cooled sugar mixture in a blender and process until smooth. Cover and chill overnight.
The day of, strain the lemon verbena mixture through a fine sieve, and discard any solids. Brew three cups of hot tea, and chill (figure about one tea bag per one cup of water. Don't use a really strong flavor like Earl Gray or it will overwhelm the delicate lemon verbena - I used Darjeeling which seemed to work nicely).
Place 2/3 cup ice cubes in each of three glasses. Fill each with one cup of the chilled tea and two tablespoons of the lemon verbena mixture. Stir. Garnish with lemon wedges or mint sprigs for a pretty presentation! Each serving is 70 calories.
A note of caution: I tried to halve this recipe, since it's just me sipping the iced tea - don't! It resulted in so little of the sugar/water/verbena mixture that my blender almost couldn't mix it. I recommend making the full batch regardless of how many people you intend to serve, and then just brewing the proper amount of tea.
lemon verbena $3.99
Darjeeling tea $4.99