Wash and clean the shrimps and trim by cutting off the antennae and carapace spikes.
Add rice washing or water in a pot and bring to a boil. Add in onions and tomatoes. Cover and simmer until the tomatoes are soft.
Add in the sinigang sa sampalok mix, black pepper, shrimp cube and salt. Stir and continue cooking for a few seconds. Taste the broth adjust the seasonings if necessary.
Then add the radish, okra, siling haba and kangkong then bring to a boil. After a few seconds add the shrimps quickly and stir.
Simmer for 2 to 3 minutes and stir. Don't overcook because it will taste better if the shrimps are half cooked.
Turn off heat and serve hot. Enjoy!