You haven't truly figured out the United States if you haven't thoroughly sampled its favorite breakfast food: Cereal. Anybody in-the-know knows that your choice of cereal is more than just about taste. It's a religion. Cereal Mascots (Tony the Tiger, anyone?) are more beloved in U.S. households than Marvel's superheroes. From corn to wheat, from artificial to whole-grained organic, from fruit-filled to chocolatey, from honey-soaked to cinnamon-infused, any worthwhile American supermarket offers hundreds and hundreds of cereal varieties to satisfy any craving. Can you really call yourself a master of this All-American phenomenon? It takes a true love for this breakfast delight to get these questions right.