Pour the water in a large cooking pot and bring to a boil
Add onions and tomatoes and cook until texture becomes soft
Put-in the sinigang mix and simmer for 2 minutes
Add the banana pepper and string beans and simmer for 3 minutes
Add the shrimps and fish sauce then simmer for 5 minutes
Add the water spinach, turn the heat off, and cover the pot. Let stand for 5 minutes.
Serve hot. Share and Enjoy!