01 - Place the diced mango, chopped cucumber, coconut water (or plain water), and fresh lime juice into the blender jar.
02 - If using honey or agave syrup and fresh mint leaves, add them to the blender now.
03 - Secure the lid and blend on high speed until the mixture is completely smooth and no chunks remain, about 30 to 45 seconds.
04 - Taste the smoothie and adjust sweetness by adding more honey or agave syrup as needed, then blend briefly to incorporate.
05 - If a colder, frostier drink is desired, add a handful of ice cubes and blend again for 10 to 15 seconds.
06 - Pour the smoothie into two glasses and serve right away for the freshest flavor and best texture.