Soba (そば or 蕎麦) Japanese pronunciation: [soba]) is the Japanese name for buckwheat.
It usually refers to thin noodles made from buckwheat flour, or a combination of buckwheat and wheat flours (Nagano soba). They contrast to thick wheat noodles, called udon. Soba noodles are served either chilled with a dipping sauce, or in hot broth as a noodle soup. そば In Japan, soba noodles are served in a variety of settings throughout Japan, but are also served by expensive specialty restaurants. Markets sell dried noodles and men-tsuyu, or instant noodle broth, to make home preparation easy. There are a wide variety of dishes, both hot for winter and cold for summer, using these noodles.