Cashew Husk

Cashew Husk, Cashew Testa or Husk is a by-product of cashew processing industry. It is an outer cover of the cashew kernel and is between pericarp and kernel of the cashew nut. It is slightly reddish-coloured. The cashew husk is one of the sources of vegetable tanning materials available indigenously. It highly contains condensed type of tannins due to which it offers good scope for commercial production of tannin extract either alone or in blends with myrobalan.