Remember when pork bellies were considered a subpar cut of meat? When coconut water was relegated to the “international foods” section of the supermarket? Or when cupcakes were exclusive to childrens' birthday parties? In recent years, these foods have managed to break out and become the face of consumer hipness. A look at food trends with David Sax, author of "The Tastemakers: Why We’re Crazy for Cupcakes and Fed Up With Fondue."