Starbucks used Cochineal in the Frappuccino. The ingredient is also called Crimson Lake, Carmine, Natural Red 4, E120, or C.I. 75470.
Carmine. (2012, March 26). In Wikipedia, The Free Encyclopedia. Retrieved 21:38, March 28, 2012, from http://en.wikipedia.org/w/index.php?title=Carmine&oldid=483988050
Carmine. (2012, March 26). In Wikipedia, The Free Encyclopedia. Retrieved 21:38, March 28, 2012, from http://en.wikipedia.org/w/index.php?title=Carmine&oldid=483988050