Is it better to put leftover food in the fridge or outside in winter

Storing leftover food in the refrigerator during winter is safer than keeping it at room temperature. Low temperatures in refrigerators can inhibit bacterial growth and reduce the risk of food spoilage, while outdoor temperatures fluctuate greatly and cannot sustainably inhibit microbial growth. The temperature in the refrigerator compartment is usually maintained at around 4 degrees Celsius, which can effectively slow down the growth rate of bacteria in leftovers, especially for perishable foods such as meat and soy products rich in protein. Low temperature environment can reduce the generation of nitrite and lower food safety hazards. It should be noted that leftovers should be fully cooled before being placed in the refrigerator to avoid condensation of hot air, which increases the energy consumption of the refrigerator. At the same time, they should be sealed with plastic wrap or sealed in a container to prevent cross contamination and cross contamination. It is not recommended to refrigerate leafy vegetables for a long time, and it is best to consume them on the same day.

The outdoor temperature in northern winter may be lower than the refrigeration temperature of the refrigerator, but the temperature difference between day and night can cause food to repeatedly thaw and freeze, accelerating spoilage. There is still a risk of dust, insect and rodent pollution in outdoor environments, and oxygen cannot be isolated. Oil and fat foods are prone to oxidation and spoilage. Starch based foods are prone to dehydration and hardening in low-temperature dry environments, which affects their taste. If temporary storage is necessary, choose a cool and ventilated place, cover with a dust cover, and the storage time should not exceed 4 hours. Regardless of the storage method used, leftovers should be thoroughly heated to a center temperature exceeding 70 degrees Celsius before being consumed again. It is recommended to consume them within 24 hours. Regularly clean the inner walls and sealing strips of the refrigerator to prevent the growth of psychrophilic bacteria such as Listeria monocytogenes. Reasonably planning the portion size of dishes and reducing the production of leftovers is the best way to ensure a healthy diet.