Everyone knows that Doritos are not naturally flavored, but what does natural mean anyways? This week author Mark Schatzker introduces us to laboratory food, and tells us how flavor technology has skyrocketed in a time where natural foods have never been more bland. We'll taste apricot preserves, and we’ll speak with food writer Adam Gopnik. Then we’ll head into the test kitchen to uncover the secrets behind making the Ultimate Banana Bread. And of course, we’ll be taking your calls to answer all of your cooking questions. Originally aired May 28-June 4, 2015. Available for re-run October 8-15, 2015.