Arrange the pork in a pan. Saute for a few minutes until it changes color. Season with salt and pepper. Continue sauteing until some oil has been rendered. Remove the pork from the pan. Set aside

In the same pan, saute the onions and garlic. Add the tomatoes and gently crush them while sauteing. Add the seared pork back to the pan and saute for a minute.

Season with soy sauce (or patis) and oyster sauce. Add some water to soften the pork. Cover the pan and let it simmer for 30 minutes using low medium heat until the pork is tender.

Add some chopped green chilies. Cook for a few more minutes until the sauce is reduced. Transfer the pork kinamatisan to a serving plate.

Serve with a lot of hot steaming rice. Enjoy!