01 - Place the diced mango, chopped cucumber, coconut water (or plain water), and fresh lime juice into a blender.
02 - If using honey or agave syrup and fresh mint leaves, add them to the blender. Blend on high until completely smooth and no chunks remain.
03 - Taste the smoothie and adjust sweetness by adding more honey or agave syrup as needed.
04 - If a colder, thicker consistency is desired, add ice cubes and blend again briefly until incorporated.
05 - Pour into glasses and serve immediately. Garnish with a cucumber slice or mint sprig if desired.