When you chug a sports drink or chew a stick of gum, you probably don’t think about the science behind it. But there’s a precise craft to what you’re tasting. In 2011, 60 Minutes met the scientists who create flavors that make foods and beverages so tasty that critics say they're addictive. “We want a burst in the beginning. And maybe a finish that doesn't linger too much so that you want more of it,” explained flavorist Dawn Streich. | 60 Minutes