Ramen is a Japanese noodle soup. It consists of Chinese wheat noodles served in a meat or (occasionally) fish-based broth, often flavored with soy sauce or miso, and uses toppings such as sliced pork , nori, menma, and scallions. Nearly every region in Japan has its own variation of ramen, such as the tonkotsu ramen of Kyushu and the miso ramen of Hokkaido. Mazemen is a ramen dish that is not served in a soup, but rather with a sauce, like noodles that are served with a sweet and sour sauce.