Cutch – (Acacia catechu) is the rich reddish brown color seen in Indian textiles. It is both a dyestuff and tanning agent and has been used in India since ancient times. The dye is made by soaking cutch wood in hot water until the liquid becomes syrupy. The thickened liquid is cooled, pressed and then cut into cubes and dried. Then it is ground into a powder for dyeing. Cutch extract is sweet smelling in the dye bath and yields rich red browns with long cooking times. Cutch with an alum mordant will be golden yellow brown and requires a two hour simmer to develop its deepest shades; the addition of 10% hydrogen peroxide or 2% dissolved soda ash in the dyebath will dramatically deepen the color. Cutch combined with iron willyield a lovely Chocolate Brown.
- 100g of Cutch extract will dye approximately 500 grams (1.1 pounds) of fiber to a dark shade