Cashew nuts are delicious and the most desired of all the nuts. They are “Nature’s Vitamin Pill”. They are rich in zinc and good fat. These mouth watering nuts are related to poisonous ivy and poisonous oak. Urushiol is a skin irritant present in the shell of the raw unroasted cashew nuts. The cashew nuts when eaten or brought in contact with the skin when raw and not roasted cause skin itching, rash and allergy. There is a liquid present on the inner surface of the shell of the cashew nut. This liquid poisons the nut, if accidentally comes in contact with the cashew nut while breaking the shell.