2 1/2 gallons water
8 c. sugar
72 oz. lemon juice
16 oz. orange juice
24 oz. pineapple juice
4 bottles ginger ale

Mix water and sugar until dissolved. Add juices and mix well. Freeze. When ready to serve, take out early enough that it is soft enough to mash up with potato masher. Should be icy. Add ginger ale just before serving.