Soba is a noodle made out of buckwheat. Although traditionally served in a hot soup broth, this is a great and healthy way to turn a steamy bowl of soup to a light salad. Japanese cucumbers are found at Japanese Supermarkets. They are skinnier in size and often have tiny bumps on the outside.
Soba (そば) 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.