Clean all the peppers, and half onion then roughly chop or blend, then set aside.
Heat the oil in a saucepan/pot over medium-high heat then add the remaining onion(chop it) and cook for a few minutes until it fragrant, add ginger and garlic and stir for a few seconds. Add the blended pepper and stir.
Stir and lower the heat, cook until the content is reduced, fried, and oil floats. Season with the seasoning powder/cube and salt.
Serve and enjoy!
Note:
You can double the ingredients if you need to. Make sure you fry the stew to the right consistency you want before adding the cabbage and shrimp to avoid overcooking.