Soy sauce book

This is a book entirely about soy sauce.

A specialist book on soy sauce. It seems like it should exist, but it was hard to find. It's a book that's all about soy sauce, including basic knowledge about soy sauce, introductions to producers, and how to use it in cooking. (Publisher: Genkosha / Authors: Mantaro Takahashi and Keiko Kuroshima / A4 modified size / with cover / 128 pages)

Shokunin Shoyu No.