If the walnut is moldy and rotten, it may produce toxins after moldy, which will also cause the walnut kernel to be bitter. If the walnut kernel is not white or a little yellow and tastes a little spicy, it means that the walnut has gone bad and can't be eaten any more.
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Precautions:
1, walnuts should be eaten in moderation: walnuts contain more fat, and eating too much at a time will affect digestion. The weight of walnut kernel taken every day is about 20-40 grams, which is equivalent to about four or five walnuts.
2. Don't peel the thin brown skin on the surface of walnuts: Some people like to peel the thin brown skin on the surface of walnuts, which will lose some nutrients, so don't peel this thin skin.
3, should be taken in moderation, long-term use: the fat contained in walnuts, if eaten too much and can not be fully utilized, will be stored as cholesterol by the human body, and the result is counterproductive.
4, people with diarrhea should not eat: walnuts are warm, get angry, and contain a lot of oil. Eating too much will make people get angry and get sick. People who get angry and have diarrhea should not eat it.
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