Set the stove to medium and heat the cooking oil in a pan.
Saute the onion, garlic, ginger, tomato and chilies for a minute.
Pour in about a tablespoon of fish sauce, stir in the shrimp paste, cover and cook until softened, about three minutes.
Add the winged beans, okra and squash (see notes after the recipe).
Pour in the coconut milk.
Cover the pan and simmer until all the vegetables are done.
Pour in the thick coconut milk, stir and bring to a simmer.
Taste and add more fish sauce, if needed.
Toss in the crispy pork belly, if using.
Serve your gising-gising with rice.