1. There is no essential difference between pig blood and duck blood, but the trace elements are different. The essence of pig blood and duck blood is protein, and there is not much difference. But in the presence of trace elements, the iron content of duck blood is still relatively high. Duck blood is indeed a very good choice for people who need iron supplementation. People's impression that duck blood is healthier than pig blood is also due to the existence of iron, which is still very important to the human body, but it needs to be ingested in moderation.
Second, pig blood and duck blood are actually replaceable, but there are differences in taste. Eating hot pot will generally order pig blood and duck blood, and there will be candidates when cooking, but there are relatively few. This is because duck blood and pig blood are still very fresh, and duck blood and pig blood that have been separated for too long are not edible. When eating hot pot, people will choose duck blood and pig blood to be different, because the taste of the two is different, and duck blood will taste better.
Third, there will be more people who like and choose duck blood than duck blood. Then, because the iron content of duck blood will be higher and the taste will be better, there will naturally be more people who choose duck blood, and duck blood is not easy to disperse when eating hot pot. It's still a whole piece after ironing. Do you like duck blood or pig blood?