Grind the sambal mixture, you may need a tablespoon if grinding is difficult in your grinder.
Heat up a wok/pot with 2 Tbsp of the cooking oil.
Cook the sambal mixture at medium to high heat until the oil floats on top (15 minutes).
Add the kang kong stalks, and fry for a minute.
Add the leaves and stir until water from the vegetables can be seen on the wok/pot, probably takes another minute or two.
Add the oyster sauce, give it a quick stir.
Serve with hot, steamed rice.