Overview: Adam Gertler takes a tropical tour of the fruit flavors at the heart of classic candy bars and exotic new sours. In Lufkin, TX, see how the Atkinson Candy Company turns a tropical storm of coconut into millions of their famous Rainbow Coconut Bars. Then rediscover Bonomo Turkish Taffy bars. Out of production for decades, the best-selling Bonomo bars are back, in all of the original flavors, including strawberry and banana. And in South San Francisco, pucker up for a new generation of sour chews at Gimbal's Fine Candies, featuring a medley of twelve tartly sophisticated flavors.