Kimchi brings both health and beauty, according to devotees trying to promote South Korea's most famous food -- a pickled and fermented vegetable dish -- to the wider world. "You know why there are so many beautiful women in Korea and Korean women have such smooth skin? It's because they have been grown on kimchi," claims Kim Sung-Hoon, who chairs an upcoming Gwangju Kimchi Festival. "If you want to age gracefully and have beautiful skin, eat Korean kimchi," said Kim, a former agriculture minister. Such assertions are not new given kimchi's iconic status -- it has its own museum in...