Plug in your pressure cooker and hit Saute or Chicken/Meat. Heat up oil and saute the garlic until about halfway cooked. Add the pork (or chicken, beef, pork cuts) with a dash of salt and pepper and saute until slightly browned.
Add brown sugar and mix until blended with the meat. Add the Soy sauce, vinegar, black peppercorn (or ground pepper) bay leaves and mix well.
Cover and apply manual 15 minutes.
Once the timer has gone off let the pot do a 10 minute resting period and then release any extra steam out of the pot.
Turn pot back onto saute or press the chicken/meat button again.
Mix the cornstarch and water into a separate bowl and then add to the pot, mix well.
Let pot boil for 5 minutes and then switch to warm.