Cow’s milk in fluid drinking form was not introduced in America until the 17th century, and quickly gained popularity. Before long it was promoted as a science-backed dietary necessity even though a large portion of the population was lactose intolerant and could not digest it. Despite this, culinary historian and author Anne Mendelson chronicles the story of milk and unravels the myths and misconceptions surrounding its importance in her recent book, "Spoiled: The Myth of Milk as Superfood," and joins Linda to talk about it.