1 (6 ounce) package cherry gelatin
3/4 cup sugar
2 cups boiling water
1 (46 fluid ounce) can pineapple juice
6 cups cold water
2 liters ginger ale, chilled
In a 4-qt. freezer-proof container, dissolve gelatin and sugar in boiling water. Stir in pineapple juice and cold water. Cover and freeze overnight. Remove from the freezer 2 hours before serving. Place in a punch bowl; stir in ginger ale just before serving.