Stir-frying vegetables with vinegar not only improves one's appetite, but also prevents the Vc contained in the vegetables from being damaged too much. Wang Xiaochun, a senior nutritionist at the Ministry of Health, said that eating some vinegar stir-fried vegetables when you have a cold helps to increase the content of Vc in the body, which can enhance the body's immunity, so as to achieve the role of auxiliary treatment of colds. Chinese medicine believes that smoked vinegar can inhibit or kill airborne germs. So, can putting vinegar in the dish inhibit the reproduction of bacteria and have a killing effect on germs? Wang Xiaochun that, stir-frying vegetables fumigation out of the vinegar flavor is light, and immediately that is scattered, can not play the role of fumigation sterilization. However, vinegar has the effect of protecting the Vc in vegetables from destruction. As we all know, Vc can resist the cold virus, eat more vegetables and fruits rich in Vc, can also play a role in combating the role of colds. Vc is often in the high-temperature cooking is destroyed, but they are very stable in the vinegar. Secondly, some vegetables in the presence of ascorbic acid enzyme, they come into contact with the air, will play a role in destroying Vc. But in the vinegar, ascorbic acid enzyme will deteriorate, lost the ability to destroy Vc, so, stir-fry or do cold dishes, put some vinegar can prevent Vc suffered damage. Wang Xiaochun said, vinegar has appetizing effect, can regulate gastrointestinal function. Cold patients usually have a poor appetite, if you can eat some vinegar stir-fry dishes, will increase appetite. But in fact, most people do not like to eat stimulating food after a cold, prefer to eat light and easy to digest food. Therefore, whether to eat vinegared vegetables after a cold depends on personal taste preferences and acceptance. Common vegetables that can be used for vinegar cooking are: cabbage, bean sprouts, lotus root, potatoes and so on.