The cashew nut, which is still of high nutritional value, is a kidney-shaped nut with a rich nutritional value, which can be a snack and a delicious meal, as well as a medicinal one, one of the world ' s famous four primary nuts. According to Chinese medicine, cashew nuts are odour-free, flat and non-toxic. It cures cough, anxiety, thirst. Protein is 21 per cent, oil is 40 per cent and vitamins are high。