Peel and cut one orange and one grapefruit into small pieces, removing all seeds and white bits of skin, add two sliced bananas, a tablespoon of chopped or grated pineapple, sweeten to taste, and mix with the juice from a can of pineapple.
Stand in a very cold place, or put in the ice cream freezer and partially freeze, serve in small glasses and ornament with maraschino cherries. Reserve the remaining pineapple for a luncheon dish.