Koreans Share Their Secret for Chicken With a Crunch By JULIA MOSKIN WHEN Joe McPherson moved to Seoul in 2002, he thought he was leaving fried chicken behind. “I grew up watching Popeyes training videos,” Mr. McPherson said. His father managed a Popeyes franchise near Atlanta and fried chicken was a constant presence in his life. “Living in the South, you think you know fried chicken,” he said. But in Seoul, he said, “there is a mom-and-pop chicken place literally on every corner.” Many Asian cooking traditions include deep-fried chicken, but the popular cult of crunchy, spicy, perfectly nongreasy chicken...