4-Methylimidazole (4-MEI), a chemical that can form during the caramelization process, is a byproduct of Class III and IV caramel coloring ... they use Class 4 Caramel Color in the product ...

is a byproduct of Class III and IV caramel coloring. The chemical, used in a popular US breakfast food, has been known to cause cancer. Incidentally, the same breakfast is available in the UK ...