Heat a nonstick pan over medium heat and add oil. Add the onions, garlic and saute for 1 minute or until it becomes translucent.
Add ginger, shitake mushroom and stir fry for about 2 minutes.
Add the meat protein and mix. Then add the potatoes and cover for about 3 minutes or until it softens.
Add 1 cup of water and cover until it simmers.
Add soy sauce, vinegar, peppercorn, and bay leaves.
Then add the eggplant and cover until it softens or for about 5 minutes.
Add dark brown sugar and season with salt and pepper or add mushroom seasoning to enhance the taste.
Add bell pepper mix and finish it off by garnishing it with green onion leaves.