Tips:
1. Add more water to the stew pot if you like. Adding 3 bowls of water to the stew pot can make 2 bowls of soup.
2. Since fish maw has a strong fishy smell, add more ginger slice and cooking wine for blanching can effectively remove its fishy smell and taste.
3. No need to add chicken powder if you desire. A little salt is enough for adding taste because this soup should be light and comfortable taste.