Roughly break up the frozen pitaya into chunks if using the pack and place it into the bowl of a food processor or good blender. Add any other frozen fruit and just enough liquid to blend. Blend until well combined. Transfer frozen mixture to a bowl and top with your favorite toppings. Enjoy right away or freeze until you're ready (but not too long or it will be rock hard).
Notes
Nutrition information for this recipe will vary depending on toppings.