Soba, a thin noodle made of buckwheat flour, is eaten or the scent enjoyed all over Japan and had become a subject of classical literary arts, especially rakugo.
Yamagata was a place to ship rice to the Edo Shogunate by Kitamae ship, so rice production was popular. Soba has historically been offered as thank-you after the rice farming work that many neighbors helped, and its taste was a showcase for the farmers. That is why soba became famous in Yamagata prefecture.
Soba fields spread along the Oishi Kaido(highroad) in the countryside, and many soba restaurants are concentrated in it. In August, the fields are filled with small white flowers, and in the fall you can enjoy the fragrant new soba.
Gallery (click photos)
The restaurant ‘Heikichi’ I found in the countryside by chance is the following.
The place name is “Jinego”, literary ‘next year’s children’ in Japanese characters, because it was too snowy to register the birth at the government office only next year.