Starbucks says it is using dye created from the ground up bodies of dried insects. But that is not unusual.
The dye has been used as a coloring agent since the 15th century and is used in jams, alcoholic drinks, bakery products, cheddar cheese and more.
The Food and Drug Administration says the product is safe, but the World Health Organization says it's been known to cause asthma or allergic reactions.
