Soba is the Japanese buckwheat noodles.Soba is very popular in Japan.There are inexpencive fast food at railway stations called name Tachigui soba where customers stand at a counter whi eating soba noodles. It's convenient when you're busy because you can be in and in a short period of time.Each dish costs between $2-$4 and the cheap price make it very popular with businessmen.