Sear the potatoes and bell peppers in a little oil. Season lightly with salt, then set aside.
Sear the liver in a little oil. Season with salt, add the vinegar, and let it simmer briefly. Set aside.
Sear the pork until browned. Season with salt.
Sauté the ginger, onion, and garlic with the pork.
Add the water, soy sauce, oyster sauce or fish sauce, sugar, and bay leaves. Simmer until the pork is tender.
Add the liver and cook just until done.
Add the vegetables and simmer until just tender. Adjust the sauce and seasoning as needed.
Stir in the peas and chilies. Cook until heated through, then remove the bay leaves. Turn off the heat.