Soba is a type of thin Japanese noodle made from buckwheat flour. It is served either chilled with a dipping sauce, or in hot broth as a noodle soup. Moreover, it is common in Japan to refer to any thin noodle as soba in contrast to udon which are thick noodles made from wheat. It takes three months for buckwheat to be ready for harvest, so people can harvest it four times in a year; it is harvested mainly in spring, summer, and autumn. In Japan, buckwheat is produced mainly in Hokkaido. People call soba that is made with buckwheat that has just been harvested “shin-soba”. It has more sweetness and taste than soba.