This allegation is refuted by another article in the book, which points out that this episode is too convenient to be valid, and says that hashed beef was a popular dish at that time at Mikawaya, a Western-style restaurant located in Kanda Sakuma-cho, which was founded in the first year of the Meiji period.
しかし、書中ではこれをあまりに話が出来すぎていると指摘し、明治初年以来の洋食屋である神田佐久間町の三河屋にてハッシュ・ビーフが流行った事が記載されている。