Package Includes: Udon noodles. Katsuo soup base. Green onion & seaweed topping. Nasoya: Now you can make a hot bowl of authentic Japanese noodles soup at home. Our katsuo soup base, green onion & seaweed topping ensures restaurant quality taste. Enjoy Nasoya Udon noodle soup & look for other Nasoya noodle meal kits in the produce section. Follow Nasoya Online! Facebook. Pinterest. Instagram. YouTube. www.nasoya.com. Product of Republic of Korea.