Combine all of the ingredients in a high-speed blender, and blend until smooth. Add more water, if needed to blend, and taste it before you serve. You can always add a squeeze of honey or a pitted date for more sweetness, if needed.
- Leftover smoothie can be stored in an airtight container in the fridge for up to 24 hours, or you can freeze it into popsicle molds for a treat later. - As written, this recipe makes a slightly thick smoothie with an ice-cream like texture when you use frozen fruit. If you use fresh fruit, make sure to use less liquid so it won't be too runny.