
Another of
the greatest human inventions has been the traffic light, so on the occasion of
the International Inventors' Day, we recommend you to make a traffic light-shake
in honour of two inventors: John Peake
Knight, who invented the first manual traffic light in the middle of the
nineteenth century, and Ernest Sirrine who improved it by making it automatic.
For this
smoothie, full of vitamins, we used fresh strawberries, banana...