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I am at Boston University

History

Health food stores on the West Coast of the United States began selling smoothies in the 1930s associated with the invention of the electric blender. Inspired by his work as a soda jerk, smoothies were further experimented with in the 1960s by Steve Kuhnau. Smoothies were an alternative for the lactose intolerant Kuhnau to taste his own concoctions using various blends of fruit juices, vegetables, protein powder, and vitamins. Kuhnau discovered early success in his smoothie sales and founded Smoothie King. Smoothie King would go on to expand throughout the United States and pioneer other smoothie businesses such as Jamba Juice. The smoothie was then modified by fast food chains with the addition of sweeter ingredients like chocolate and Splendia and integrated into their menus. The smoothie is now often made at home as a dietary supplement and a simple way to consume daily fruits and vegetables.

Citation

1. Smith, Andrew F.. Food and Drink in American History: a Full Course Encyclopedia [3 Volumes] : A Full Course Encyclopedia, ABC-CLIO, LLC, 2013. ProQuest Ebook Central, https://ebookcentral.proquest.com/lib/bu/detail.action?docID=1682953.
2. https://extension.usu.edu/nutrition/research/smoothies-helpful-or-harmful
3. https://www.mdpi.com/2072-6643/10/4/431/htm