12 cups cold water
1 (12 ounce) can frozen lemonade concentrate, thawed
1/3 cup white sugar
1/4 cup fresh lime juice
1/2 cup firmly packed torn basil leaves
Stir water, lemonade, sugar, and lime juice together in a pitcher. Add 1/2 cup basil leaves, stir to combine, cover the pitcher, and refrigerate until flavors combine, 8 hours to overnight. Remove basil leaves and discard.