A French chef who inspired a tough kitchen character in the hit animated film "Ratatouille" was named the world's best female chef on Wednesday.Helene Darroze, 48, has an eponymous restaurant in Paris and another in the Connaught hotel in London, which has two Michelin stars.Darroze was named the world's best female chef by Britain's Restaurant magazine, and is to collect her prize at "The World's 50 Best Restaurants" awards in London in June.