I used to love to get these at Rosedale! Now they have all kinds of fancy flavors but in the old days, there was only orange, and it was a big novelty when they added strawberry! I swear I remembered powdered sugar in this recipe, but maybe not?
1 1/4 cup orange juice
1 cup water
3 T egg white or egg white substitute
1 teaspoon vanilla extract
1/4 cup granulated sugar
1 ½ cup ice
Combine all of the ingredients except ice in a blender set on high speed. Blend 15-30 seconds to dissolve sugar. Add the ice, blend 10-15 seconds or so.