1. Pork liver and yam: Yam is rich in vitamin C. Pork liver contains trace elements of copper, iron, zinc and other metals. When vitamin C encounters metal ions, it will accelerate oxidation and destruction, reducing the nutritional value.

2. Pork liver and rivet fish: Pork liver and rivet fish should not be eaten together. Fish contains a variety of bioactive substances. Eating it with pig liver can reduce the nutritional value of pig liver and easily cause abdominal pain and diarrhea.

3. Pork liver and sparrow meat: Pork liver and sparrow meat cannot be eaten together, otherwise it will cause indigestion.

4. Pork liver and pepper: Pork liver should not be paired with tomatoes, peppers, edamame and other vegetables rich in vitamin C when fried or made into soup. Vitamins are easily destroyed when exposed to heat and light, are relatively stable in acidic solutions (pHlt; 4), and are extremely unstable in neutral and alkaline solutions. Especially in the presence of trace amounts of metal ions (such as copper ions, iron ions, etc.), it is more likely to be oxidized and decomposed. Even trace amounts of copper ions can speed up the oxidation of vitamin C by 1,000 times.

5. Pork liver and red wine: Do not eat pork liver and red wine together, as this will reduce the body's absorption of iron.

6. Pork liver and sardines: Pork liver and sardines cannot be eaten together, otherwise you will feel sick.

7. Pork liver and buckwheat: Eating pork liver and buckwheat together will affect digestion.

8. Pork liver and bean sprouts: Pork liver and bean sprouts cannot be eaten together. If these two are eaten together, it will damage the absorption of nutrients. Because the copper in pig liver will accelerate the oxidation of vitamin C in bean sprouts and lose its nutritional value.