In a large pot or skillet, heat the vegetable oil over medium heat.
Add the finely chopped onion, minced garlic, and minced ginger. Sauté until the onion is soft and translucent.
Add the bite-sized pork pieces to the pot and cook until the pork is browned on all sides.
Stir in the ground Sichuan pepper (if using), ground turmeric, ground black pepper, and salt. Mix well to coat the pork evenly with the spices.
Add the chopped dried red chilies and sliced daikon radish to the pot. Cook for about 5 minutes, stirring occasionally.
Pour in the water or pork broth and bring the mixture to a boil.
Reduce the heat to low and let the stew simmer for about 30 minutes, or until the pork is tender and the radish is cooked through. Stir occasionally.
Transfer the Phaksha Paa to a serving dish.
Garnish with freshly chopped cilantro.
Enjoy your meal!