You’ve probably heard the old adage that breakfast is the most important meal of the day. You might have thought the phrase was coined by a committee of nutritionists or the Food and Drug Administration, but the truth is it actually originated in 1944 as part of a marketing campaign launched by General Foods to advertise breakfast cereal. Thus, the second most important ingredient in the widespread popularity of breakfast cereal is advertising. (The most important is sugar.) Though some of today