Hiro Ramen are very popular noodle dishes in Japan, and boiled noodles are basically served in different flavored soup with many toppings. Chukamen noodles which are generally made with wheat flour and kansui (alkaline solution) are used for ramen dishes. There are many regional speciality ramen available in Japan. They are different in broth, soup flavors, toppings, noodle texture, and more. Making a delicious ramen isn't easy if you are making the soup from scratch.