Throw the coconut water, lime zest and juices into your blender and blast on high for 30-60 seconds, until the zest has been pulverized and evenly distributed. Add chia seeds and blend on low with a high speed blender or low if you are using a conventional blender for a few seconds or until the chia is incorporated and slightly broken down but now fully blended.

Taste, add stevia or sweetener and blend again briefly. Transfer to a glass jar and chill in the fridge for 2 hours. Give it a stir before drinking.

Serve chilled.