2. As a seasoning, it is mostly used in dishes and soups with peculiar smell such as meat, fishy smell and mutton, and also plays a role in improving the taste and fragrance of dishes and soups without peculiar smell.

According to the different ingredients, it can be cut into onion segments and mixed with chopped green onion, which should not be fried or fried for too long.

3. Onion leaves are rich in provitamin A and should not be discarded.

4. diallyl sulfide contained in onion is very volatile, so it is not suitable for soaking in water or cooking for too long.

After cooking, many dishes are sprinkled with chopped green onion, which is good in color, smell and taste.