In a large pot, add water and bring to a boil.
Add onions and tomatoes. Cook until their texture are soft.
Add sinigang mix and simmer for 5 minutes.
Add long green pepper and string beans. Simmer for another 3 minutes.
Add shrimps and fish sauce. Simmer for another 5 minutes.
Add kangkong, turn the heat off and cover the pot. Let the steam cook the kangkong. Wait for 5 minutes.
Remove from pot and serve. Enjoy!
inspired by Panlasang Pinoy.