Ingredients

1-1/3 cups sugar5 cups water, divided 1 tablespoon grated lemon zest1-3/4 cups lemon juice (about 10 large lemons)

Preparation

In a large saucepan, combine sugar, 1 cup water and lemon zest. Cook and stir over medium heat until sugar is dissolved, about 4 minutes. Remove from heat. Stir in lemon juice and remaining water; refrigerate until cold. Serve over ice.