1. Salt: used for seasoning.
2. Soy sauce: It can make the soup more delicious.
3. Ginger and garlic: It can deodorize and enhance the taste.
4. Cooking wine: it can be added in the process of stewing, and it can remove the fishy smell and increase the fragrance.
5. Spices such as star anise, fragrant leaves and pepper: it can enhance the taste.
These seasonings can be adjusted according to personal preferences to suit your own taste. In addition, you can also choose a specific seasoning according to the requirements of the menu or local flavor. I hope it helps you!