Add all ingredients to a high-speed blender. Blend until smooth, using the tamper if needed to help everything blend evenly. Add a little extra coconut water only if necessary to get things moving.
Transfer the mixture to a freezer-safe container, smooth the top, and freeze for 4 hours, or until firm enough to scoop.
Let the sorbet sit at room temperature for a few minutes, or microwave for a few seconds, until soft enough to scoop.
Want it creamier and less icy? After freezing, break the sorbet into chunks and return them to the blender. Blend again until smooth and creamy, adding a small splash of coconut water if needed. Serve immediately for a soft-serve consistency or refreeze. The sorbet will remain creamy after refreezing.