Neuroscience of McMuffins

 If the human tongue has a secret password, then this sweet, salty and fatty breakfast sandwich is the code. The problem of course, is that all the deliciousness comes with a steep caloric cost: every McGriddle has 420 calories, 15 grams of sugar and 80 percent of the recommended daily allowance of cholesterol. As Elizabeth Kolbert recently described in the New Yorker, this preference for bacon wrapped in sweet pancakes is an unfortunate side-effect of human evolution: