Natural Japanese vegetable coloring used in order to dye the paper in the various natural tonalities. Color sand bank is introduced similar to one small pigna dark brown colour.You dips the necessary amount of "Yasha No Mi "in hot water to infusion until obtaining a more or less intense color. The paper comes ink to paint-brush or for immersion repeating the operation also in more small resumptionsuntil it comes caught up the colour you want.Le "pigne" can be dryed and be re-use more times.