Tremella soup is a high-nutrition health supplement, but after being left overnight, its nutritional value decreases and harmful components are produced. This is because both indoor-cultivated and wood-cultivated tremella contain a high level of nitrates. After being cooked, if left for a long time, the nitrates are reduced to nitrites by bacterial action.
1. Can you eat overnight eggs?
Overnight eggs, can you eat them?
Northerner: Yes, don't you see tea eggs sold everywhere!
Southerner: No, especially for men, because it can cause a hernia/ swollen testicles.
Scientist: Not necessarily! If the egg is not fully cooked, the uncooked yolk, if eaten overnight, can easily breed bacteria if improperly stored, thus being harmful to health, causing issues such as gastrointestinal discomfort, bloating, etc. However, if the food (egg) is fully cooked and properly sealed and stored at a low temperature (generally refrigeration temperature), it can generally be safely stored for 48 hours. From the scientist's advice, we can know that whether overnight eggs can be eaten doesn't just depend on whether they are reheated, but also on whether they were fully cooked the first time they were boiled. Only after being fully cooked the first time can they be reheated and eaten the next day without issue. This is the same principle for tea eggs; many people may not know that tea eggs are boiled twice. The first time they are boiled until cooked, and the second time the shells are cracked and ingredients like tea are added to simmer again, so tea eggs are definitely cooked. Now, some people like to eat half-cooked eggs (with the yolk semi-liquid), and those eggs cannot be eaten overnight, even if reheated.
2. Overnight tea should not be drunk.
Overnight tea has lost most of its vitamins due to the long time, and the proteins, sugars, etc., in the tea will become nutrients for bacteria and mold to breed, so people generally believe that overnight tea should not be drunk.
3. Can you not drink overnight water??
Boiling tap water for 3-5 minutes minimizes the content of harmful substances like nitrates and chlorides, making it most suitable for people to drink.
Drink less overnight water:
Nitrites can form carcinogenic nitrosamines in the human body. Experts have found that the nitrite content in boiled water is higher than in raw water. Moreover, repeatedly boiled water or water boiled for too long or for more than 24 hours has a significantly increased nitrite content. After being left for 24 hours, the nitrite content in boiled water is 1.3 times that of freshly boiled water. Chinese people have the habit of drinking boiled water. It is best to boil and drink it fresh or only drink the boiled water of the day. Also, do not drink water that has been boiled for too long.
4. Can you eat overnight tremella?
Tremella soup is a high-nutrition health supplement, but after being left overnight, its nutritional value decreases and harmful components are produced. This is because both indoor-cultivated and wood-cultivated tremella contain a high level of nitrates. After being cooked, if left for a long time, the nitrates are reduced to nitrites by bacterial action. When a person drinks this soup, nitrites naturally enter the bloodstream. The red blood cells contain hemoglobin, which can carry large amounts of oxygen for the body's needs. However, nitrites have the opposite effect, oxidizing the body's normal hemoglobin into methemoglobin, which loses its ability to carry oxygen, causing the body to lack normal hematopoietic function!
5. Do not eat overnight leafy greens!
Because some leafy vegetables contain a high level of nitrates, if they are cooked and then left for too long, the nitrates will be reduced to nitrites by bacterial action, which is carcinogenic and cannot be removed by reheating. Healthy eating method: Generally, leafy stem vegetables have the highest nitrate content, followed by gourd vegetables, and root and stem vegetables and cauliflower are in the middle. Therefore, if you buy different kinds of vegetables at the same time, you should eat leafy stem vegetables first, such as cabbage, spinach, etc. If you plan to cook more food to eat reheated the next day, you should try to make less leafy stem vegetables and choose gourd vegetables instead.
6. What to do with overnight soup??
Cantonese people love to simmer soups. Leftover soup is put in the refrigerator and reheated the next day. Is this overnight soup good for your health? (Sweat.. I often do this) Healthy eating method: The best way to store soup is not to add salt or other seasonings to the base. After cooking the soup, use a clean spoon to scoop out the portion for the day. For the leftover soup, it is best to store it in a crockpot in the refrigerator. Because when leftover soup is stored in an aluminum or stainless steel pot for a long time, chemical reactions are likely to occur. It should be stored in glass or ceramic containers.
7. Seafood cannot be eaten overnight!!
Foods that should not be eaten overnight include fish, seafood, leafy vegetables, and cold salads.
After being left overnight, fish and seafood can easily produce protein degradation products that can damage liver and kidney function. Leafy vegetables contain varying amounts of nitrates. If cooked for too long or left for too long, the vegetables will turn yellow and lose their flavor, and the nitrates will be reduced by bacteria into toxic nitrites, which have a carcinogenic effect. Cold salads are more contaminated during preparation, and even after refrigeration, they are very likely to have spoiled overnight and should be eaten immediately after being made.
8. Do not eat overnight family braised and pickled foods.
Braised and pickled foods are popular seasonal dishes among Shanghai citizens. Many people like to put leftover braised and pickled foods in the refrigerator "overnight," but this practice has great food safety hazards. To prevent food poisoning, do not eat overnight braised and pickled foods in spring and summer.
Unpackaged braised foods should be finished on the same day and not left overnight. From a food safety perspective, this is unhygienic. If possible, it is best not to eat overnight pickled foods. Food experts remind that even food stored in the refrigerator is not absolutely "safe." Molds and psychrophilic bacteria can easily grow in the refrigerator.