Sudachi limes are originally from Japan and were traditionally used in ponzu sauce, which is a thin, tart sauce that is made out of Sudachi or yuzu, mirin, katsuboshi, seaweed, and vinegar.  Sudachi lime production has increased and has become a niche industry to meet rising market demand. With the presence of social media and immediate access to information on new produce items, chefs across the world are now using the tiny fruit for its bold, sharp flavor.