[Editor: This post reminds me of the weight loss tip an art therapy undergraduate once shared - eat your food on blue coloured bowls & plates to shed the pounds. Blue is believed to be a colour that suppresses appetite, therefore making you eat less and feel full faster. Have you tried this weight loss advise before? Did it work for you?]
There are no vegetables that are blue.
According to Color Professor J.L. Morton :
“Blue food is a rare occurrence in nature. There are no leafy blue vegetables, no blue meats and aside from blueberries and a few blue-purple potatoes from remote spots on the globe; blue just doesn’t exist in any significant quantity as a natural food color.
Consequently, we don’t have an automatic appetite response to blue. Furthermore, our primal nature avoids foods that are poisonous. A million years ago, when our earliest ancestors were foraging for food, blue, purple and black were “color warning signs” of potentially lethal food.”
Dr Gary Blumenthal, president of International Food Strategies, further explains that “…color and the appeal of various foods is also closely related. Just the sight of food fires neurons in the hypothalamus. Subjects presented food to eat in the dark reported a critically missing element for enjoying any cuisine: the appearance of food. For the sighted, the eyes are the first place that must be convinced before a food is even tried. This means that some food products fail in the marketplace not because of bad taste, texture, or smell but because the consumer never got that far. Colors are significant and almost universally it is difficult to get a consumer to try a blue-colored food — though more are being marketed for children these days. Greens, browns, reds, and several other colors are more generally acceptable, though they can vary by culture. The Japanese are renowned for their elaborate use of food colorings, some that would have difficulty getting approval by the Food and Drug Administration in the United States.”
Morton, J.L (n.d.). Color Matters: Color and Food Matters. Retrieved from http://www.colormatters.com/appmatters.html
If you want to read more on the topic, here are books that you can check out at our library.
All Rights Reserved, Aspen Publishers 1999
Food color and appearance by John B. Hutchings
Publisher: Gaithersburg, Md. : Aspen Publishers 1999.
Call No.: R 664.062 HUT
All Rights Reserved, Capital Books, c2003.
The 7 Day Color Diet: the new way to health & beauty by Mindy Weisel
Publisher: Sterling, Va. : Capital Books, c2003.
Call No.: 615.89 WEI -[HEA]
All Rights Reserved, Bounty Books, 2008.
The Hamlyn Vegetable Book by Clare Connery.
Publisher: London : Bounty Books, 2008.
Call No.: 641.65 CON -[COO]
All websites are last accessed on Sep 2009. Please refer to the terms and conditions on the homepages for use.
For the availability of the above book titles, please check the library catalogue.
Originally Answered by Ms Yasmin Ally
Librarian, Adult & Young People’s Services