For the green banana soup, blend well 3 bananas with cucumber and 200 ml water in a stand blender. Pour into plate or bowl.
Blend the other 3 bananas with the baby or boy spinach and the remaining 100 ml of water. This should result in a slightly thicker consistency.
Now add the dark green part to the light green part as well and stir a bit, but do not mix completely.
Serve the green banana soup.