2. Wipe paper towels: When buying chestnuts, bring some paper towels and clean the chestnuts' shells. If you find oil stains on it, it means that paraffin oil may have been added to this chestnut, so it is best not to buy it.
3. Look at the color of the pulp: When buying chestnuts, don't blindly pursue the white or golden color of the pulp. Meat that is too golden can be treated chemically. On the contrary, it is normal if the pulp is brown in the middle after frying or cooking. This is caused by browning reaction of enzymes contained in chestnuts. As long as the taste has not changed, it is harmless to human body.
Extended data:
Precautions:
1. Don't eat too much: Chestnut is a kind of nut with rich nutrition, but you can't eat too much. Chestnut is high in calories and protein, which will lead to abdominal distension. This situation should be encountered by many people. Chestnut is also high in sugar, so people who want to lose weight must not eat too much. Eating too much may make you fat.
2, not easy to digest: chestnuts can be eaten raw or cooked. Raw chestnuts are brittle and difficult to digest. Eating too many raw chestnuts may cause stomachache. If the chestnut is ripe, it is best to eat it while it is hot, because the starch in the chestnut is easy to grow again, and it is not easy to digest after cooling.
3, chestnut should not be eaten with mutton, not only difficult to digest but also easy to get angry. Chestnuts can't be eaten with beef, which will destroy nutrition and may also cause vomiting.
Baidu encyclopedia-chestnuts