Dissolve sugar in water. Add juices. Peel and mash bananas; put through food mill. Stir into juice. Ladle into wide-topped freezer containers, leaving 1" head space. Cover tightly; freeze. Recommended storage time, up to 1 month.
To serve, thaw Banana Crush in refrigerator to mush consistency, about 4 hours; half fill glasses with mixture. Fill with chilled carbo