Mud dyeing, Honba Oshima Tsumugi Fabric

Mud dyeing is a traditional technique that requires time and skill.
First, boil the finely chipped yeddo hawthorn bark (techigi) and then dye the threads repeatedly in the extracted liquid. Next, when dyed with mud, the tannic acid contained in the techigi and the iron rich mud react chemically to dye the tastefully austere black unique to Oshima Tsumugi.