Things will be supplemented more or less, but this is a trade secret. If you have worked in a hot pot restaurant, you will know, and you have a good understanding of the hot pot business. Interesting! As long as it is cleaned, it is harmless to the body. Some people are afraid of eating stale duck intestines. Then I'll tell you. Just eat the wide and big duck intestines, and it is best not to eat the narrow ones! Some people ask why some duck intestines are so red. It's the blood. Just to look better and have an appetite. Sometimes it doesn't matter if there is too much blood. Don't worry about eating.