Ingredients
3/4 cup sugar
3 tablespoons sumac
2 limes, halved and thinly sliced, plus wedges for serving (optional)
1/2 cup packed fresh mint leaves
48 ounces seltzer or club soda
Preparation
Bring sugar and 3/4 cup water to a boil in a small saucepan, stirring until sugar is dissolved. Stir in sumac. Remove from heat; let cool completely. Strain mixture, discarding solids. Refrigerate, covered, until cold, at least 1 hour and up to 1 week.
Muddle limes and mint in the bottom of a large pitcher with a muddling tool or wooden spoon. Stir in sumac syrup. Add ice and top with seltzer. Serve in ice-filled glasses, garnished with lime wedges.
