Spinach or pickled sauerkraut stored for a long time contains toxic nitrite, which will oxidize normal hemoglobin in blood into abnormally high hemoglobin, leading to hypoxia in blood circulation.

Long-term hypoxia can cause a series of pathological and clinical symptoms. People are advised not to eat spinach that has been stored for too long or pickled sauerkraut that is not well preserved. Pickled sauerkraut is best soaked in water 1 ~ 2 days before eating.

Pig liver:

Pig liver contains a substance called copper ion, which will make vitamin C in sauerkraut oxidized, and the nutrients will naturally be destroyed, and the individual's body can't get enough nutrition in sauerkraut because of this. In this way, the edible value of sauerkraut will be reduced a lot, and the taste of sauerkraut will be greatly reduced.

Persimmon:

Sauerkraut is a cold food, and persimmon itself is also a cold food. If you put the two together, or eat sauerkraut and persimmon successively, the burden on your stomach will increase.

This can lead to stomach pain, stomach acid, diarrhea and vomiting. If these things happen, it will undoubtedly be a kind of pain for you. If persimmon and sauerkraut are eaten together, it will not only cause indigestion, but also cause serious gastrointestinal diseases.

Extended data:

Matters needing attention in sauerkraut processing:

Sauerkraut should be stewed and cooked thoroughly before eating. Long-term gluttony of pickled cabbage with poor quality, poor food hygiene, mildew and short curing time may cause urinary calculi.

Eating pickled cabbage contaminated by miscellaneous bacteria, moldy and containing too much nitrite due to short curing time will turn hemoglobin in blood into methemoglobin without oxygen-carrying function, make red blood cells lose their oxygen-carrying ability, lead to tissue hypoxia, and cause symptoms of nitrite poisoning such as cyanosis of skin and lips, headache, dizziness, nausea and vomiting, palpitation, and even death in severe cases.

Moldy sauerkraut has obvious carcinogenicity and cannot be eaten.

Winter is the best season to make pickles or pickles, and it can be made in other seasons, but the quality is not as good as winter.

People's Network-Spinach+Sauerkraut = Poison! 10 food collocation taboo

Baidu encyclopedia-Chinese sauerkraut