What is purple and green and spins round and round? A Berry Green Smoothie, of course! Smoothies date back to the 1930's with the invention of the blender; early recipes for fruit smoothies can be found in Waring "Blendor" cookbooks of the 1940's. However, it is commonly Steve Kuhnau who is credited with making smoothies popular in the 1960's in Southern California and can now be found everywhere, but beware, commercial smoothies can often be loaded with added sugar. Blending your own is the best way to customize the nutritional profile and limit added sugars. Have fun and remember, vegetables and fruit make the perfect blend.