Overview:Fu is a processed, flour-based food eaten in Japan since ancient times. At first glance, it may look like bread, but it has few calories and lots of protein. This mysterious food soaks up umami like a sponge, making it a treasured ingredient in dashi soup stock-based Japanese dishes. Travel with us to an over 400-year-old city lined with beautiful buildings and streets to learn more about the elastic, kaleidoscopic treat called fu.