These dishes should not be eaten fresh, as fresh mushrooms can lead to poisoning
For most foods, the fresher they are, the higher their nutritional value, the better the taste, and the more appealing the color. After long-term storage, their color, aroma, shape, and texture deteriorate, nutrients are lost, harmful substances accumulate, and they may even spoil, leading to food poisoning. However, this general rule does not apply to the following foods.
I. Milk
Some people prefer "freshly squeezed" milk, believing it is fresher and more nutritious. In fact, this method greatly increases the risk of milk contamination, which can come from the following factors: the health of the person milking the cows; the hygiene and disinfection of their hands; the environmental cleanliness of the milking area; the disinfection status of the milk container; and the health of the cows (whether they are infected with pathogenic microorganisms such as Brucella, tuberculosis bacteria, Staphylococcus aureus, or foot-and-mouth disease virus).
Fresh daylilies contain colchicine, which can cause poisoning symptoms in the human body, such as nausea, vomiting, headache, and abdominal pain. Large consumption can lead to hematuria, bloody stools, and even death. In the dried, steamed, and processed form of daylilies, the colchicine is leached out, making it non-toxic.
III. Fresh Jellyfish
Fresh jellyfish contain toxins and are inedible. Only after being dehydrated several times with salt and alum can the toxins be completely removed.
IV. Fresh Mushrooms
Fresh mushrooms contain a type of photoreactive porphyrin substance. After consumption, exposure to sunlight can cause skin itching and edema, and in severe cases, can lead to skin necrosis. If edema occurs in the mucous membranes of the throat, it can cause difficulty in breathing. Dried mushrooms are a finished product that has been sun-dried. During this process, most of the porphyrins are decomposed. Furthermore, before consumption, dried mushrooms are soaked in water, which dissolves any remaining toxins. Therefore, rehydrated dried mushrooms are non-toxic.
V. Bottled Water
Before bottling, bottled water is often disinfected with ozone. Therefore, freshly filled bottled water contains a relatively high concentration of ozone, which poses a potential health risk. It is best to let bottled water sit for 2 days for the ozone to dissipate naturally before drinking.
VI. Fresh Pickles and Sauerkraut