During the Spring Festival, there are many leftover dishes that have been stored for a long time. How can some overnight dishes be preserved and consumed in a healthier way? Yu Kang, director of the Clinical Nutrition Department at Peking Union Medical College Hospital, said that measures should be taken to minimize nitrite intake as much as possible. Yu Kang stated that the first step is to ensure the freshness and hygiene of food ingredients at the root, minimize the consumption of pickled, grilled, and processed meat, and be careful not to store green leafy vegetables for a long time. For prepared meals, try to ensure they are finished within 3 hours. Experts remind that refrigeration in the refrigerator cannot completely inhibit bacterial growth, and long-term storage can also lead to a decrease in the content of nutrients such as vitamin C. Therefore, if you need to bring meals the next day, you can cook and separate the dishes with clean utensils, and then refrigerate them to avoid food contamination and reduce nitrite content. "Regardless of the measures taken, overnight dishes should be eaten within 24 hours and thoroughly heated before eating." Yu Kang suggested. (Lai Xin She)