Judy Joo is an American chef and television personality. She is one of the four Iron Chefs on the cooking show Iron Chef UK and was a judge on season four of the Food Network show The Next Iron Chef. She has also been a judge on Iron Chef America and a Challenger in the Iron Chef UK vs. Iron Chef America battle. She is also the host of Korean Food Made Simple. Joo graduated from Columbia University with a Bachelors of Science degree in Industrial Engineering and Operations Research. She began a career in the banking industry working at Goldman Sachs and Morgan Stanley as an institutional fixed income derivatives saleswoman. However, she switched careers and began working as a chef at Gordon Ramsay's restaurants, including Maze, Petrus, Gordon Ramsay at Claridge?s and The Boxwood Caf�. She has also worked in the restaurants The French Laundry and The Fat Duck. She is opening up her own restaurant in London called Jinjuu in Soho, expected winter of 2014. Prior to that she was the executive chef for the Playboy Club London.