Mainly because of the sour radish old duck soup, mainly because of the sour taste of salted duck soup and sour radish.

Adding mushrooms will make the taste of mushrooms be suppressed by the taste of sour radish, or the taste of the two will be mixed and become nondescript.

Put fungus and kelp, preferably some bamboo shoots and the like. This will not affect the taste of duck soup, but also enhance flavor and reduce boredom. Yulan tablets also increase the crispy taste of dishes in soup.