Combine the sugar and water in a saucepan and bring to a boil over medium heat. Drop in the mint sprigs and the orange zest.Reduce the heat and simmer for 2 to 3 minutes. Turn off the heat and allow the syrup to sit, undisturbed, for 2 hours. Remove the mint and orange zest.
Transfer the syrup to a glass jar and store it in the refrigerator. Add 1 to 3 teaspoons to each glass of tea.
Comments: The mint tea that I love to drink in North Africa inspired this syrup, which when mixed with iced tea, adds a sweet, minty flavor with a touch of orange. But it doesn't have the cloying sweetness of the North African version.