Half to the same amount as the weight of the fabric
A deciduous tree that grows wild in the mountains of Japan. The inner bark contains the basic yellow pigment berberine, which has been used as a yellow dye since ancient times. It is also believed to have insect-repellent properties and has been used for Japanese paper, but its fastness to sunlight is rather weak.
Lemon yellow can be dyed on silk and wool without solvent. Cellulose such as cotton is difficult to dye as it is, but it can be dyed well by applying a tannin base. Note that bean juice undercoat or Color Up ZB, a darkener, does not work well.