Walnuts are known as one of the world famous “four nuts” along with hazelnut, almond, cashew nuts. Walnuts are rich in nutrients, hectogram containing 15~20 grams of protein, more fat, 10 grams carbohydrates; and contain essential calcium, phosphorus, iron a variety of trace elements and minerals, and carotene, riboflavin and other vitamins. It is beneficial to human body and is one of the most popular nuts that among people.