Ramen is a type of Japanese noodle dish that consists of wheat noodles served in a meat or fish-based broth, often flavored with soy sauce or miso, and uses toppings such as sliced pork, dried seaweed, kamaboko, and green onions. It is a popular dish in Japan and is also widely available in other countries. UDON (4 letters) is another kind of noodle that is thicker and chewier than ramen. It is usually served in a hot broth with various toppings such as tempura, fish cakes, and vegetables. SOBA (4 letters) is a type of thin, buckwheat noodle that is served either hot or cold. It is often served with a dipping sauce or in a soup.