Nishinsoba is soba in hot broth, topped with simmered herring. It includes chopped long green onions, seaweed, and a slice of boiled fish paste. It is very famous in Kyoto, because it originated there. Why is a herring topped on the noodles? The reason is because a herring is rich in protein, minerals, vitamins. Plus, the combination of a herring and soba taste better. People in Kyoto usually eat this on New Year's Eve.