Yamaki Mentsuyu Noodle Soup Base, 16.7 FL. Oz (500ml). This concentrated soup base is made from traditional Japanese cooking ingredients such as soy sauce, mirin, kombu (kelp), and sake in addition to bonito flakes. This soup base from Yamaki is made with two types of bonito flakes for a balanced taste. Yamaki is one of Japan’s leading manufacturers of bonito flakes with more than 100 years of experience, having started the company in 1917. As well as a soup base for noodles, Mentsuyu can also be used as a dipping sauce for cold noodle dishes or tempura. Expect a deep, savory, and umami flavor when used in your dishes. Allergens: Wheat, Fish, Soybeans, and Monosodium Glutamate (MSG).