Editor's Note
A one-of-a-kind eatery attached to an antiques shop opposite the Mashu Onsen road station (est. 1999). The soup simmers a full day with chicken bones, katsuobushi, vegetables and fruit — finished with salt alone, no MSG.
We have not visited this shop yet. All information is based on public sources (SNS, official sites). Please check with the restaurant before visiting. Corrections welcome at yamada.soichiro@gmail.com.