Boil water in a large pot.
Add tomatoes and onions to the pot and cook until tomatoes are softened.
Add finger chilies.
Add corned beef chunks into the pot and let it boil.
Simmer for 10 minutes.
Add sinigang mix and let it simmer for another 5 minutes.
Bring the mixture to a boil again and add Kang Kong and cook for 1 minute.
Add salt to taste.
Remove from heat. Serve and enjoy!
Inspired by Butter Love Affair