That is it! 3 ingredients.
Cut the watermelon off the rind and then cut into chunks.
Place in a food processor, chopper, blender. I used the Ninja and it really makes a smooth job of this process. Here is a link to the exact one that I have – Ninja Master Blender.
After you have your watermelon all blended – pour it through a sieve. The amount will equal about 4 cups. Do not worry about exact measurement. If you get 6 cups it will be a pretty sweet popsicle but why not.
Squeeze all the juice you can out of the grapefruit. I use one of those little wooden hand reamers
Pour this liquid through a sieve also. You want about 2 cups of grapefruit juice. Again, don’t stress about exact measurements. Set aside.
Next get all the juice from the oranges. I used the reamer again.
Put through a sieve and this should measure about 1 cup of orange juice.
Mix all three of the juices together and stir.
Pour into your popsicle molds and freeze at least 6 hours. I used Norpro Ice Pop Maker.
The measurements I gave you make 20 popsicles so the extra juice can be put into a container until the first batch is frozen.
Take the frozen popsicles out of the mold and put in a freezer bag.
Replace in the freezer.
Fill the molds, again, with the remainder of the juice and freeze.