You can make these popsicles with as little as three kinds of fruit. I used five, but if you are using larger molds, you may wish to use even more variety. Begin with very chilled or, better yet, frozen fruit to help keep the colors from bleeding into one another too much (although a little of that looks pretty, I think). I used:
- Red: Frozen strawberries blended with cranberry juice
- Orange: Frozen peaches blended with orange juice
- Yellow: Frozen pineapple blended with lemonade
- Green: Frozen kiwi blended with limeade
- Blue-Violet: Frozen blueberries blended with cranberry juice
I made six popsicles and therefore made about 1/3-1/2 cup of each color slush. Play it by ear. If you end up with too much, make more popsicles or toss the extra slush in a container and freeze for later. Starting at one end of the rainbow spectrum, layer the slush in order by carefully spooning 1-2 tablespoons of slush into a popsicle mold at a time. When the layers are in place, carefully set the popsicle sticks and freeze them for about 2 hours before unmolding and enjoying.