Since the Meiji period, in keeping with the opening of the railway (Mito Line), natto has been sold as a souvenir (it is said that the first one was Tengu natto), and this area is famous for the production of natto.
-明治以降、鉄道（水戸線）の開通に伴い、土産品として売られた（天狗納豆が発祥とされる）のをきっかけに、産地としてもっとも知られている。