The hairless hide is kneaded with salt. In the past, this was done using feet. In modern times, a rotating drum is used instead. This kneading process softens the hide.
In the old days, the hide was placed on the riverbank and left to dry in the sun. It took about two days in summer and ten days in winter for the hide to dry out. As rain or snow could derail the process, it is necessary to have good knowledge of the weather in the area.
When the salted hide is dry, it is soaked in water for softening. Care has to be taken to ensure that not too much salt is washed away. The hide is then taken out of the water. After the hide has been drained of water, it is pressed between stones.
The hide is placed in a drum and spun. The rotating drum loosens fibers in the hide, making it pliable. In the past, this step was so arduous that even a master craftsman could finish only two pieces of hiding in a day.
The hide, which shrinks during the spinning process, is stretched by pulling and securing the edges along with a net.
Rapeseed oil is thoroughly rubbed onto the hide. The hide is then spun and stretched again.
Surface dirt and salt are washed off. Some salt should still be retained by the leather. At this stage, the final appearance of the leather will start to surface.
The leather is placed on a specialized paddle. The leather is thinned as it is stretched over the paddle. The characteristic white color will emerge as the leather is thinned.
The leather is washed in water to rid it of salt. This is the final step, as it will no longer be salted. In the past, the leather was washed in the river. Today, river water is brought to the workshop and leather-washed indoors.
This is the natural milky color of the leather, brought about by fully organic materials and processes. The delicate and beautiful grain is the hallmark of the SHIRONAMESHI method.
After the flesh is removed from the skin, the hide is soaked in the river. Bacteria in the waters of the Ichikawa accelerate hair removal. The hide remains in the water for a week in summer and two weeks in winter. It is then taken out of the water and the remaining hair is removed with a knife.