Japanese DIY materials #2 Persimmon Tannin Dye “Kakishibu”

I have written a little about “kakishibu” in my previous blog Circa mid/late 19 centuries – our “new” door, but it deserves a dedicated blog post in my opinion so here it is.

History -It’s Ancient

Kakishibu
Liquid made from fermented young persimmon.

“Kakishibu” is a traditional Japanese dye or paint made from unripe persimmons which have been fermented and aged for several years. Deep amber in colour, this natural material has many benefits and it is believed to have been around in Japan for 10,000 years. It was quite commonly used for its waterproofing, desiccating, antiseptic and strengthening effects. Applied to boats, fishing nets, umbrellas and raincoats as a waterproofing agent. It was an essential material to laminate paper used in stencil printing for kimono fabrics. It was also your insect deterrent, deodoriser, remedy for high blood pressure and ointment for burns. This unique and versatile material was quite a popular household item until chemical products took over after the second World War.

As a Building Material

My handy husband applying “kakishibu” paint.

“Kakishibu” is a source of the very image many of us associate Japanese traditional architecture with – that dark colour of timber. It has been an essential material for traditional buildings for centuries. Apparently every household had a pot under the house a few hundred years ago. We always keep a bottle or two around the house ourselves but I am sure people think we are quite eccentric. It can be applied on timbers such as walls, floors, beams and furniture to keep moisture out as well as to protect it from insects such as termites. I have never applied on anything else but apparently works on paper, concrete and stone as well. You can use a paint brush or a cloth. Just take a small amount, apply it, wipe the excess off with a cloth and leave to dry for an hour or so. Repeat this two or three times. It does have a strong smell (you thought natto was bad?) but that will go in a few weeks. Unlike modern paints, it is not mixed with drying medium so it is slow drying (I have brushed against our walls and stained my clothes so be careful). But if you are fixing an old house, I highly recommend this product. It gives such a beautiful natural vintage colour to your house and newly painted parts blend in quite well. Best of all, it’s natural and safe.

Natural and Safe – No VOC

I should have talked about this aspect first. Can’t get more natural than “Kakishibu” as far as a paint goes. If you have asthma or allergies and are concerned about indoor air pollutants or Sick Building Syndrome, “kakishibu” together with “shikkui” plaster is a winner. Sadly “Kakishibu” gave way to modern paints and almost disappeared from daily life of post war Japan but it is gaining popularity again as the world turn to more healthy and environmentally sustainable alternatives.

There were three places that are particularly famous for “kakishibu” production: Minoh (Gifu), Yamashiro (Kyoto) and Bingo (Hiroshima/Okayama). So chances are you can still find quality products from these places. Here is one boutique manufacturer in Hiroshima who are doing a great job of resurrecting their highly praised craft. Takanjo – Bigo Onomichi

If you want a faster drying “kakishibu” paint that’s free from toxic substances, “RJ” in Hiroshima has a paint called “Benkei Nagomi” which come in two different shades of vintage dark brown. One of our builders told me about this and we love their stuff. Check out their other products as well, they have great natural waxes or penetrating sealers for unvarnished timber etc. These are safe and perfect for use in traditional Japanese houses.

Unlikely Patrons – Pirates and Ninja

The Seto Inland Sea, known for its beautiful archipelagos.

So this is a silly little postscript. It was good to write this blog as I learnt a lot.

Did you know there were pirates in Hiroshima, one tribe in particular called the Murakami Pirates? They were more like an unofficial navy or “samurais” of the sea, rather than terrorists and thieves as the name might suggest. Around the 15th and 16th century, the pirates controlled waterways around the Seto Inland Sea which was a crucial maritime trade route. Feared, respected and influential, they even built a castle on one of the islands entrusted with “policing ” duty by the ruling Shogun of the time, Mohri. It might sound like a synopsis of the next hit drama on Netflix but it is true. “Kakishibu” is said to have been the Pirates’ must have item. They would have used it on sailcloths, bottom of the ships and fishing nets etc. Given the geography, I would imagine Bigo “kakishibu” must have been a popular commodity for those who work around the sea much more so than that of other cities.

Kouka Ninja – One of the two major clans of ninja (Shiga Pref.)

The other unlikely association to “Kakishibu” is Ninja. People often assume they wore black but it’s actually not the best colour to hide in the dark. In those days, dying fabric in black would have cost a lot more, hence it was not the most worn colour by the ordinary civilians – and this, blending in with the crowd, is in fact one of the guidelines of ninja, according to an old ninja handbook “Shohninki (c 1681)”. “Kakishibu” dyed fabrics could have darkened in time, but black outfit could not have been so typical. There might have been some regional differences but dark brown such as “kakishibu” dye or dark blue such as indigo dye would have been more realistic, given they were supposed to be peasants, merchants, buskers or mountain priests. They certainly weren’t your muscly James Bond in a tux. Don’t quote me on any of the above though, it is just my opinions and observations based on my own research.