Southern Peach Swizzle

In a small bowl toss peaches with 2 tablespoons of the Southern comfort; divide peaches among two ice cube trays. Fill trays with water; cover and freeze overnight. In a medium saucepan combine 4 cups water, ginger, and brown sugar. Bring to boiling; reduce heat. Simmer, uncovered, for 5 minutes. Remove from heat; let stand for 30 minutes. Strain and discard ginger. Cover and chill syrup. Just before serving, in a large punch bowl combine syrup, peach nectar, lemonade concentrate, remaining Southern Comfort, and ginger ale. Serve over prepared ice cubes.