In a medium bowl, marinate pork and chicken in soy sauce, garlic, peppercorns, bay leaves, water and oyster sauce for 30 mins or longer.

Cook and add the meat with the marinade in the pan and cover. Bring to boil in medium fire until pork becomes tender.

Add vinegar and simmer until only a thick oily sauce is left.

The pot should look saucy and sticky.

Serve hot with toasted garlic on top.