A smoothie or smoothy is a drink made by puréeing fruit and vegetables
in a blender. A smoothie often has a liquid base such as fruit juice,
milk, yogurt, ice cream or non dairy milk. The term "smoothie" has been
around since the early 20th century, but it wasn't until 1930 that it
was used to describe a drink. Early smoothies were simply fruit, fruit
juice and ice, and they were an obscure concept in the United States
until the natural food craze of the '60s and '70s.