In life, it is inevitable that there will be leftovers, and it will be a pity to throw them away. However, if leftovers become' overnight dishes', harmful substances will be produced, which is not conducive to human health after eating.

"overnight dishes" don't just refer to dishes that have been left overnight. If it exceeds 8- 10 hours, you should consider staying overnight. There are two reasons for the increase of toxic components in food. The first reason is that chemicals in food can produce carcinogens, such as nitrite, which cannot be removed even by heating. Another reason is the secondary pollution caused by foreign bacteria when placed.

Extended data;

Food that can't be eaten overnight

1, overnight soup is harmful to health

Don't put the soup in a metal container. Boiling soup takes time and effort. People often cook a large pot and eat it for several days. If the leftover soup is left in aluminum pot and iron pot for a long time, it will precipitate substances harmful to human body.

2. Don't drink overnight tea.

Most of the vitamins in overnight tea have been lost for a long time, and protein and sugar in tea soup will become nutrients for bacteria and molds to reproduce.

If you really think it's a pity to throw it away, Bian Xiao tells you several ways to reduce the harm.

Reference source; People's Daily Online-Five Precautions for Overnight Food

People's Network-How to deal with the harm of eating overnight dishes without wasting them?