1, the nutritional value is different: the processed cooked walnut is full of oil, rich in flavor and good in taste. Because of the high nutritional value of raw walnuts, the nutrition of unprocessed raw walnuts has hardly changed, so the nutritional composition of raw walnuts is obviously better than that of cooked walnuts.

2, the skin is different. There will be a green skin on the outside of raw walnuts, and this green skin often determines the freshness of raw walnuts. Mature walnuts often don't have this skin. When they mature, the epidermis will gradually fall off and split automatically.

3, the taste is different. Raw walnuts will taste a little dry, and cooked walnuts will feel a little sweet.

Matters needing attention in eating walnuts

It should be noted that walnuts cannot be eaten with turtle meat, because eating walnuts and turtle meat will be toxic and affect health.

Walnuts can't be eaten with soybeans, which will cause abdominal distension, abdominal pain and indigestion.

Walnuts can't be eaten with strong tea, because walnuts are rich in protein and iron, and tea contains tannic acid, which will combine with iron and protein in walnuts to produce insoluble precipitate, which is not easy to be digested and absorbed, so it is forbidden to drink strong tea when eating walnuts.

Refer to the above? Baidu Encyclopedia-Walnut, People's Network-How to Choose Walnuts? Nutritional value of walnut