Plenty of mushrooms enriches the flavor even more. It is a soy sauce-flavored ramen made by a long-established soy sauce maker in Fukui Prefecture that adds Echizen crab broth as a secret ingredient. The flavor of the mushrooms is lively and goes well with the chewy straight noodles. What is Furumura Soy Sauce: Furumura Soy Sauce is a historic brewer founded in the Edo period. Born into a family of senior members of the Kaga Domain, the first Jiemon is said to have started brewing soy sauce at the end of the Edo period under the guidance of Mr. Yuyoko Jiro, a soy sauce brewer who was an acquaintance of Kanazawa Ohno Soy Sauce.