Sodas use caramel coloring to give them that dark, delicious look. Not to be confused with real caramel, caramel color is the single most used food coloring in the world. It is created by heating ammonia and sulfites under high pressure-a process that produces a cancerous substance called 4-methylimidazole (4-MEI).

The Food Babe Way (ed. Little, Brown, 2015) - ISBN: 9780316376457