Searching for the best Izakaya in River Valley? Then contact Dashi Master Marusaya. Authentic Japanese Cuisine Using All-Natural Dashi. They have a root in the whole seller of Japanese broth ingredients since 1962. Japanese broth called “Dashi” is the foundation of Japanese cuisine. The most popular type of Dashi is made from Katsuobushi (Dried Bonito Flakes). Visit them for more info.